Kalc vs ConvertTiles
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kalc
This utility app offers a unit converter, calculator, and world clock. Its user-friendly interface is designed for quick access to everyday calculations and conversions.
- Unit converter
- Calculator
- World clock
- Simple UI
- Quick results
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Unit Converter, Calculator, and World Clock. The simple & clean UI to get the results you need for everyday use as quickly as possible.
ConvertTiles
This utility app organizes unit converters into distinct tiles, simplifying conversions. It remembers your last used units and offers customization options with a pro subscription. Easily convert between a wide range of measurements.
- Tile-based converter organization
- Saves last used units
- Custom unit sets (Pro)
- Custom accent colors (Pro)
- Colored tile borders
- 20 conversion groups
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ConvertTiles is a new take on unit converter apps. A simple app where different groups of converters live on separate tiles. It is easy to change units through a simple picker and the tiles save your last used units. With a pro subscription you can customize your tiles with a custom unit set and custom accent colors. An optional colored line around each tile can help you easily find the one you are looking for. With 20 different groups almost any unit can be converted. The groups are: Acceleration Angle Area Concentration Mass Duration Electric Charge Electric Current Electric Potential Difference Electric Resistance Energy Frequency Fuel Efficiency Information Storage Length Mass Power Pressure Speed Temperature Volume Please note only 6 groups are unlocked by default. A pro subscription is required to fully unlock all 20.
Screenshots
Verdict
The clearest difference is in-app purchases: Kalc at none against ConvertTiles's 1. Kalc also leads on update cadence (every 9 days vs every 3 months) and iOS requirement (13.4 vs 16.1). ConvertTiles's advantage is rating (5.0 vs 4.7). On price, ratings volume, ads 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. ConvertTiles sells 1 one-off in-app purchase. Kalc asks for nothing beyond the download.
ConvertTiles holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively.
Kalc ships an update every 9 days, ConvertTiles every 3 months. The most recent releases landed on June 1, 2026 and June 3, 2026 respectively.
| Parameter | Kalc | ConvertTiles |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (3 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 96.2% of reviews | — |
| Number of ratings | 3 — better | 2 |
| Update frequency | Every 9 days — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.4 — better | 16.1 |
| Further details — not scored | ||
| Size | 24 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | YUTA OKAJIMA | Jason Koehn |
Customer experience
Kalc
ConvertTiles
In-app purchases
Kalc
No in-app purchases
ConvertTiles
- Pro$9.99
