30minTimer vs Unit Converter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
30minTimer
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Ever look up and realize three hours vanished into one task? This app fixes that with a simple chime. Your iPhone chimes at the minutes you choose, like :00 and :30 every hour, so you can feel time passing without checking the clock. Chimes arrive as notifications, even when the app is closed. ■ Great for • Remote work: break the day into half-hour blocks • Study: focus for 50 minutes, rest when it chimes • Healthy habits: a sip of water and a stretch at every chime • Kids' routines: when the "Oh!" plays, it's time for the next thing ■ Pick your hours • Tap the hours you want, from 0 to 23 • "9–18" and "All hours" in one tap. Quiet at night ■ Up to two chimes an hour • Spin two wheels to pick the minutes • :00 and :30, :15 and :45, or just :50. Your call ■ 7 sounds, even a voice • Chime, Warning, and three Confirm tones • Male and female "Oh!" voices • Give each wheel its own sound: a chime on the hour and an "Oh!" at half past • Tap a name to preview ■ Three simple steps 1. Pick your hours and minutes 2. Tap the big "Apply" button at the bottom 3. It chimes automatically, every day Send a test notification to hear it in 10 seconds. ■ Free, with minimal ads • Ads never interrupt your chimes • Your first "Apply" is ad-free • Later changes are saved after a short video ad • Turning notifications on/off and "Clear all" are always instant and ad-free ■ Privacy • Your settings stay on your iPhone • Chimes are local notifications scheduled on your iPhone. No developer server is involved Available in English, Japanese, and Traditional Chinese. Note: in Silent mode or a Focus, sounds may not play, following your iPhone settings.
Unit Converter
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"How many grams is a cup of flour?" "What's a dollar in yen today?" — cut the guesswork out of cooking and traveling. Unit Converter handles every conversion your day throws at you. Length, weight, temperature, currency, calories, and even traditional Japanese units — 12 categories, 150+ units, all in one place. --- Key Features --- ■ 12 Categories, 150+ Units Length / Weight / Temperature / Area / Volume / Speed / Duration / Data / Pressure / Energy / Angle / Currency. Powered by iOS Foundation for accurate results. Inches, yards, ounces, pounds — sorted in a tap. ■ Cooking Mode (Ingredient Density) "1 cup of flour = 110g", "1 tablespoon of honey = 21g" — accurate conversions using 30+ ingredient densities: flour, sugar, butter, honey, soy sauce, olive oil, and more. Essential for cooking recipes from a different country. ■ Real-time Exchange Rates USD, EUR, GBP, KRW, THB, and 33 currencies total. Powered by the European Central Bank official rates, auto-updated every 6 hours. Cached for offline use — check rates on the plane, in a foreign hotel, wherever. ■ Traditional & Regional Units Sun, shaku, ken, ri (length), momme, kan (mass), tsubo, jo (area), go, sho (volume) — Japanese traditional units fully covered, alongside imperial and metric. Perfect for tatami rooms, sake, or historical recipes. ■ Favorite Conversion Pairs Save "USD → JPY", "cm → inch", or any pair you use often. One tap to recall. Reorder freely. ■ Unit Memo Save values you want to remember, like "My height = 172cm". Fill them into any conversion instantly. ■ Widget Support Live currency rates on your Home Screen. Small and Medium widgets. Perfect for travelers who check rates constantly. ■ iCloud Sync Favorites and memos sync automatically between iPhone and iPad. Device upgrades stay seamless. ■ Search & Frequently Used Quickly find any unit from 100+ options. Frequently used units bubble up to the top automatically. --- Perfect For --- ・Cooking recipes from a different country ・Planning trips and checking exchange rates ・Shopping overseas — converting inch/lb/oz to cm/kg/g ・Real estate — square meters to square feet ・Traditional recipes needing go/sho conversions ・Kitchen prep — "how many tablespoons is 100g of butter?" ・Reading Fahrenheit and thinking in Celsius (or vice versa) --- Minimal Design --- Sage green minimal aesthetic — calm, beautiful, grown-up. Not another cluttered calculator, but a tool you'll enjoy using daily. Full light and dark mode support. --- More --- ・Full dark mode support ・16 languages supported ・iCloud sync ・Remove Ads IAP (one-time purchase) ・Privacy first: data stays on your device and iCloud ・All features free --------------------------------- Sage Apps Series A collection of iOS utility apps designed for simplicity and ease of use. Unified design to make your day a little better. >> Search "Sage Apps" on the App Store for more ---------------------------------
Screenshots
Verdict
The clearest difference is in-app purchases: 30minTimer at none against Unit Converter's 1. 30minTimer also leads on update cadence (every 10 days vs monthly). On price, ads, device support and iOS requirement 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. Unit Converter sells 1 one-off in-app purchase. 30minTimer asks for nothing beyond the download.
30minTimer ships an update every 10 days, Unit Converter monthly. The most recent releases landed on October 10, 2026 and October 15, 2026 respectively.
| Parameter | 30minTimer | Unit Converter |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 days — better | Monthly |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.5 | 17.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | hidenobu akiyoshi | Yusuke Takeuchi |
In-app purchases
30minTimer
No in-app purchases
Unit Converter
- Remove Ads$2.99
Questions
Is 30minTimer free?
Is Unit Converter free?
Do 30minTimer or Unit Converter have ads?
Which is updated more often, 30minTimer or Unit Converter?
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