Calculator with History +
by Beijing Free Calculator Technology Co., Ltd.
- Finance
- Free
- Rating
- 4.6
- 26.1K ratings · India storefront
- Last update
- Sep 19, 2026
- Version 6.9.19
- Size
- 13 MB
- Category
- Finance
- Tracked since
- Oct 9, 2026
Estimated revenue
A model estimate with a likely range, not a reported figure.
$1.8K/ month
Monthly gross store revenue (USD)
Where this falls on the revenue bands
- Likely range
- $220–18K
- <$10K
- Confidence
- Low confidence
- Chart day Oct 25, 2026
- From Finance grossing #91
Unverified model estimate. Neither Apple nor the developer has published this number, and the real figure can be several times higher or lower. Low confidence: the real figure can be a band higher or lower.
How this estimate is made
Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.
Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.
Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.
Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.
Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.
Full methodScreenshots
As shown on the App Store listing.
About this app
Text from the App Store listing.
Free calculator app for the iPhone
1. No ads and super fast startup speed
2. Calculation history
3. Visual input
4. VoiceOver
5. Backspace key
6. Easy to use with one hand
7. Show or hide scientific functions
8. Keyboard sounds (19 sounds)
9. Keyboard colors (24 colors)
10. Keyboard vibration
11. Adjustable number of decimal places
12. Thousands separator
13. Scientific calculator
calculator with pi
calculator with exponents
calculator with square root
calculator with negative
calculator with log
calculator with trig
calculator with angles and radians
calculator with e
calculator with factorial
calculator with nth root
calculator with brackets
What’s new
Release notes for the latest version, as written by the developer.
Urgently fix the issue where entering a number results in a long decimal.
Rank history
Daily position in the Germany charts. #1 is at the top.
- Best rank
- #91
- Current rank
- #91
- Days charting
- 2 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
55/100
Not flagged as small & simple
- Developer size10% · 25
Developer: 5 apps on the charts
- Audience size0% · 20
Ratings: 26,119
- App size100% · 10
Size: 13 MB
- Price model80% · 15
Price model: free with in-app purchases
- Demand proof100% · 30
Best rank #1, 144 countries
An indicator, not a fact. We can't see team size. Calculated Oct 25, 2026 · method i2
How the score worksVersion history
- 6.9.19LatestReleased Sep 19, 2026