---
title: "1+1 Calculator: Money & FIRE - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "1+1 Calculator does the math and shows its work.  Most calculators hand you an answer and forget it. This one keeps a running tape on the main screen — every expression and every result, with correct "
---

# 1+1 Calculator: Money & FIRE — United States
> Savings, interest & budgets

![1+1 Calculator App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/83/b5/0a/83b50a0d-3a6a-b640-84bf-5de35e8d79ed/AppIcon-0-0-1x_U007epad-0-1-P3-85-220.png/434x0w.png)

**Developer:** [HUY HOANG](https://apptail.io/developer/huy-hoang-lzZ) (Netherlands)
**Category:** Utilities
**Rating:** 4.0/5 (1 ratings)
**Price:** $24.99
**Bundle ID:** nl.huyhoang.calculator
**Store:** Apple App Store
**Country:** United States
**Version:** 2.4.0 (released 2026-10-11)
**Original Release:** 2015-05-27
**Languages:** Vietnamese, English, Dutch, Danish, Spanish, Italian, Korean, German, Norwegian Bokmål, Portuguese, Chinese, Finnish, French, Czech, Swedish, Japanese

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id922309782)
**AppTail Page:** [https://apptail.io/app/11-calculator-money-fire-HXRd/united-states](https://apptail.io/app/11-calculator-money-fire-HXRd/united-states)

## 1+1 Calculator Description
1+1 Calculator does the math and shows its work.

Most calculators hand you an answer and forget it. This one keeps a running tape on the main screen — every expression and every result, with correct operator precedence — so you can check your reasoning, catch the slip, and tap any earlier answer to bring it back down.

EVERYDAY MATH
• An always-on tape, so you see the steps and not just the total
• Calculators in tabs to keep separate jobs apart — name them, and each one works on its own
• A scientific mode with trig, logs, powers, roots and parentheses
• VAT / GST: enter net, tax or gross and get the other two instantly, at a starting rate you can edit
• Tip & split: enter the bill, pick a tip, split it across the table
• A memory bank for the values you keep reaching for

MONEY, LOOKING AHEAD
• Budget and trip-budget planners for what you actually spend
• An interest calculator that shows how savings compound
• A FIRE calculator to estimate your path to financial independence

MADE FOR iPhone AND iPad
• A warm, modern design with eight color themes
• System, Light or Dark, however you like it
• Two calculators side by side on iPad
• Hardware keyboard support, and a Control Center button to launch straight in (iOS 18 or later)

Free includes every calculator, one clean tab at a time. Infinity — a one-time purchase, or a monthly or yearly auto-renewing subscription — keeps every tab unlocked, gives you a tape up to 10,000 calculations deep, all eight themes, and two calculators side by side on iPad.

No ads. No tracking. No account. Just a fast, honest calculator.

Terms of Use (EULA): 
Privacy Policy: 

## 1+1 Calculator Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/12/96/04/12960498-ee09-f754-53ed-ee6f82f5319e/iPhone_67_01-tape.jpg/1284x2778.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/2f/f5/97/2ff59744-a028-a403-9b7b-6a167ba5ae61/iPhone_67_03-tabs.jpg/1284x2778.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/cc/1c/84/cc1c842f-9fa0-2043-977b-dcc978d997bf/iPhone_67_04-tip.jpg/1284x2778.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/03/16/ea/0316eaeb-2582-5636-dc5d-3636815faac1/iPhone_67_06-scientific.jpg/1284x2778.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/7e/64/14/7e64147e-c213-6e1f-024a-5dc04976d4ea/iPhone_67_07-fire.jpg/1284x2778.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/43/a0/92/43a092a5-e662-ebd8-ef4d-680bdb45369a/iPhone_67_08-trip-budget.jpg/1284x2778.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/4d/1e/1e/4d1e1e7f-8bef-392f-cb56-b233faaf57f3/iPhone_67_09-theme-ultramarine.jpg/1284x2778.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/77/de/7d/77de7d19-2247-9178-87bb-532b78bb0e17/iPhone_67_10-theme-rose.jpg/1284x2778.png)
- [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/63/25/72/63257220-ee39-5d2d-a934-19f9b797428f/iPhone_67_11-theme-dark.jpg/1284x2778.png)
- [Screenshot 10](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/3e/26/32/3e263212-9de3-c8b0-4540-92d41cf584b0/iPhone_67_01b-memory.jpg/1284x2778.png)

## 1+1 Calculator Rating Breakdown in United States
- 5 stars: 0 (0%)
- 4 stars: 1 (100%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)


## 1+1 Calculator In-App Purchases
| Item | Price |
|------|-------|
| 1+1 Infinity Lifetime Purchase | $49.99 |
| Infinity Annual Subscription | $34.99 |
| 1+1 Infinity 1 month subscription | $4.99 |
| Remove Advertisements | $2.99 |


## 1+1 Calculator Discovered Keywords
- 1
- 1 calculator

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## 1+1 Calculator Available In
- [United States](https://apptail.io/app/11-calculator-money-fire-HXRd/united-states)
- [Canada](https://apptail.io/app/11-calculator-money-fire-HXRd/canada)
- [Australia](https://apptail.io/app/11-calculator-money-fire-HXRd/australia)
- [Belgium](https://apptail.io/app/11-calculator-money-fire-HXRd/belgium)
- [Bahrain](https://apptail.io/app/11-calculator-money-fire-HXRd/bahrain)
- [Belarus](https://apptail.io/app/11-calculator-money-fire-HXRd/belarus)
- [Colombia](https://apptail.io/app/11-calculator-money-fire-HXRd/colombia)
- [Czechia](https://apptail.io/app/11-calculator-money-fire-HXRd/czechia)
- [Germany](https://apptail.io/app/11-calculator-money-fire-HXRd/germany)
- [Denmark](https://apptail.io/app/11-calculator-money-fire-HXRd/denmark)
- [Dominican Republic](https://apptail.io/app/11-calculator-money-fire-HXRd/dominican-republic)
- [Ecuador](https://apptail.io/app/11-calculator-money-fire-HXRd/ecuador)
- [Finland](https://apptail.io/app/11-calculator-money-fire-HXRd/finland)
- [Indonesia](https://apptail.io/app/11-calculator-money-fire-HXRd/indonesia)
- [Iceland](https://apptail.io/app/11-calculator-money-fire-HXRd/iceland)
- [Japan](https://apptail.io/app/11-calculator-money-fire-HXRd/japan)
- [South Korea](https://apptail.io/app/11-calculator-money-fire-HXRd/south-korea)
- [Kuwait](https://apptail.io/app/11-calculator-money-fire-HXRd/kuwait)
- [Mexico](https://apptail.io/app/11-calculator-money-fire-HXRd/mexico)
- [Norway](https://apptail.io/app/11-calculator-money-fire-HXRd/norway)
- [Nepal](https://apptail.io/app/11-calculator-money-fire-HXRd/nepal)
- [Peru](https://apptail.io/app/11-calculator-money-fire-HXRd/peru)
- [Pakistan](https://apptail.io/app/11-calculator-money-fire-HXRd/pakistan)
- [Portugal](https://apptail.io/app/11-calculator-money-fire-HXRd/portugal)
- [Qatar](https://apptail.io/app/11-calculator-money-fire-HXRd/qatar)
- [Russia](https://apptail.io/app/11-calculator-money-fire-HXRd/russia)
- [Singapore](https://apptail.io/app/11-calculator-money-fire-HXRd/singapore)
- [Slovenia](https://apptail.io/app/11-calculator-money-fire-HXRd/slovenia)
- [Vietnam](https://apptail.io/app/11-calculator-money-fire-HXRd/vietnam)
- [Argentina](https://apptail.io/app/11-calculator-money-fire-HXRd/argentina)
- [Angola](https://apptail.io/app/11-calculator-money-fire-HXRd/angola)
- [Uzbekistan](https://apptail.io/app/11-calculator-money-fire-HXRd/uzbekistan)
- [Netherlands](https://apptail.io/app/11-calculator-money-fire-HXRd/netherlands)

---

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