Calculator with reverse screen vs FlexCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator with reverse screen
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Calculator with a screen that can be displayed upside down to make it easier to read face-to-face
FlexCalc
This utility app allows users to create and edit calculations with linked values that update instantly. It offers a history feature to review past work and supports sharing calculations. Users can also customize themes and fonts for a personalized experience.
- Editable calculations
- Linked values update automatically
- Reuse results in new calculations
- Calculation history
- Share calculations
- Customizable themes and fonts
- Scientific functions
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FlexCalc is free forever, with no ads, no tracking, and no limits. FlexCalc is a flexible calculator designed for editable calculations, linked values, history, and instant result updates. Unlike a standard calculator, FlexCalc lets you tap any number or result, edit it directly, and see related results update automatically. You can reuse results in new calculation lines, drag linked values between lines, and adjust formulas without retyping everything. Key features: - Edit any number in your calculation and instantly update the result. - Reuse results as linked values in new calculation lines. - Drag linked values to replace, insert, or adjust calculations faster. - Move the cursor inside numbers for precise edits. - Review and restore previous work with calculation history. - Share calculations as text or an image. - Customize the app with different themes and fonts. - Use scientific functions and custom constants when you need more than basic math. FlexCalc is built to stay simple, fast, and distraction-free.
Screenshots
Verdict
The clearest difference is in-app purchases: Calculator with reverse screen at none against FlexCalc's 1. FlexCalc's advantage is ads (none vs shown) and iOS requirement (13.0 vs 15.8.3). On price, update cadence and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. FlexCalc sells 1 one-off in-app purchase. Calculator with reverse screen asks for nothing beyond the download.
Calculator with reverse screen ships an update fortnightly, FlexCalc every 3 weeks. Both last shipped on October 25, 2026.
| Parameter | Calculator with reverse screen | FlexCalc |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Fortnightly — better | Every 3 weeks |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.8.3 | 13.0 — better |
| Further details — not scored | ||
| Size | 35 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Hideaki Uchikoshi | Tho Tran |
In-app purchases
Calculator with reverse screen
No in-app purchases
FlexCalc
- Buy a Coffee$1.99
Questions
Is Calculator with reverse screen free?
Is FlexCalc free?
Do Calculator with reverse screen or FlexCalc have ads?
Which is updated more often, Calculator with reverse screen or FlexCalc?
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