Calcbot 2 vs Solves
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calcbot 2
This app offers a smart calculator with a history tape and expression view to track your calculations. It includes over 500 unit conversions and scientific functions, with an Apple Watch extension for on-the-go use.
- History tape for saved calculations
- Expression view for typed input
- Over 500 unit conversions
- Apple Watch extension
- Scientific functions in landscape
- Favorites for instant access
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Calcbot is an intelligent calculator and unit converter for the rest of us. Featuring an easy-to-read history tape, expression view, intuitive conversion, and much more! History Tape*. Every calculation you enter gets saved to the history tape. Refer to calculations later or send them right back to your current calculation. Expression View. Calcbot's original expression view allows you to see everything you have typed so you'll never forget what you entered or miss a typo. Apple Watch Extension. Perform basic calculations, conversions, calculate tips, and split bills right from your Apple Watch. Conversion*. Convert any of your calculations with over 500 units across 22 different categories including auto-updating currency rates. Favorites. Fave a calculation and get instant access to its result via the Favorites Key. No more cryptic memory keys. Scientific Functions. Rotate your device into landscape mode to gain access to common scientific functions. Constants. Get instant access to scientific constants like Pi, Atomic Mass, or add your own*. Round for Currency. Have all of your results rounded to two decimal places. Sounds & Animations. Beautiful custom animations and sound effects provide positive feedback and an enjoyable experience while performing calculations. * In-App purchase required.
Solves
A powerful and versatile calculator for all your Apple devices. Edit complex expressions, sync history across devices, and enjoy a clean, ad-free experience. Unlock advanced features like unit conversion and fraction support with an optional upgrade.
- Edit expressions without limitations
- Instant results
- Sync calculation history across devices
- Unit conversion (currencies, physical units)
- Fraction support
- Customizable themes
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Solves is a well-made calculator app for your iPhone, iPad, Mac, and Apple Watch. It allows you to edit expressions without limitations and get instant results. It keeps your calculation history in sync on all devices and lets you to easily interact with it. All this for free and without ads! By purchasing Solves+ you also get: • Unit Conversions: currencies (with crypto, metals & energy), physical units, and your own! • History Tools: comment, bookmark, export, auto clear, and more • Fractions • More Themes • Advanced Settings Hand-typed code. No generative AI was used during the development or by the app itself. Solves+ requires one payment only. You will own it forever on all devices.
Screenshots
Verdict
The clearest difference is review sentiment: Solves at 91% against Calcbot 2's 60%. Solves also leads on rating (4.9 vs 4.7) and update cadence (every 3 weeks vs every 2 months). Calcbot 2's advantage is ratings volume (11K vs 381). On price, ads, in-app purchases and monetization model 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. Calcbot 2 sells 1 one-off in-app purchase and Solves sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Solves holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Calcbot 2 has 11K ratings behind it against 381, so its average is the more settled of the two. Written reviews point the same way: 60% of Calcbot 2's written reviews are positive against 91% of Solves's.
Calcbot 2 ships an update every 2 months, Solves every 3 weeks. The most recent releases landed on September 29, 2026 and September 28, 2026 respectively.
| Parameter | Calcbot 2 | Solves |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (11K ratings) | 4.9 (381 ratings) — better |
| Positive reviews | 60.1% of reviews | 90.6% of reviews — better |
| Number of ratings | 11K — better | 381 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Apple Watch | iPhone, iPad, iPod, Mac, Apple Watch — better |
| Requires iOS | 15.0 | 15 |
| Further details — not scored | ||
| Size | 15 MB | 82 MB |
| Age rating | 4+ | 4+ |
| Developer | Tapbots | Oleg Barinov |
Customer experience
Calcbot 2
Solves
User reviews
Calcbot 2
From 11K App Store ratingsWhat we love
- 💻 Flexible calculator & conversions
- 📝 Comprehensive history tape
- 🎨 Customizable themes and icons
- ⌚️ Apple Watch app
- 🔢 Supports advanced calculations
Room to improve
- ⚠️ Lack of updates and support
- 🚫 Removing free features behind paywall
- 🐞 Bugs and glitches (history tape issues, crashing)
- 🕰️ Slow loading times
- 🤔 Unintuitive interface for conversions
Solves
From 381 App Store ratingsWhat we love
- 👍 Excellent calculator app
- 🚀 Smooth and responsive
- 🔒 No ads or data collection
- 💡 Useful features like history, comments, and unit conversions
- 👍 Clean and intuitive design
Room to improve
- 🐛 Occasional crashes or bugs after updates
- 🐛 Issues with certain mathematical operations
- 🐛 Family sharing not working properly
- 🐛 Lag or performance issues on some devices
- 💡 Desire for more advanced features like fractions, base conversions
Bugs and requests
Calcbot 2
Reported bugs
4 issues- History tape not recording all calculations
- Conversion settings not syncing to Apple Watch
- App crashing on launch for some users
- Blank app icons after iOS updates
Requested features
5 requests- Dark mode option
- Widgets for quick access
- More currency and unit conversions
- Improved Apple Watch integration
- Ability to edit calculations in history tape
Solves
Reported bugs
4 issues- Crashes when pressing certain buttons
- Issues with parsing complex expressions
- Incorrect results for some calculations
- Problems with history clearing or syncing
Requested features
6 requests- Add support for fractions and mixed numbers
- Implement a widget for quick access
- Allow resizing the app window on Mac
- Provide more customization options
- Add support for Apple Watch
Show 1 moreShow fewer
- Improve unit conversion experience
In-app purchases
Calcbot 2
- Calcbot Pro$1.99
Solves
- Tip Option #1$0.99
- Tip Option #2$1.99
- Tip Option #3$4.99
Show 3 moreShow fewer
- Tip Option #4$9.99
- Solves+$9.99
- Tip Option #5$19.99








