WonderCalc vs Date Radar Countdown Stopwatch
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WonderCalc
This utility app handles all your basic calculation needs, including unit conversions for length, weight, and temperature. It also offers advanced financial calculations for loans, such as monthly payments, total cost, and interest paid.
- Basic calculations
- Cut, copy, and paste functionality
- Unit conversions (length, weight, temperature)
- Loan payment calculations
- Total loan cost and interest calculation
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WonderCalc performs all basic calculations, and allows you to cut, copy, and paste values to and from other apps. It can convert between units of length, weight, and temperature. It allows you to calculate monthly payments, as well as total cost and interest paid on the life of a loan.
Date Radar Countdown Stopwatch
Easily store significant dates and calculate the time elapsed since or until them. This utility helps you keep track of important events and milestones.
- Store important dates
- Calculate ages
- Long-term timers
- Event tracking
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Store important dates and calculate ages EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: WonderCalc at none against Date Radar Countdown Stopwatch's 3. WonderCalc also leads on ratings volume (3 vs 1). Date Radar Countdown Stopwatch's advantage is rating (5.0 vs 4.7). On price, update cadence, 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. Date Radar Countdown Stopwatch sells 3 in-app purchases, starting at $0.29 per 3 months. WonderCalc asks for nothing beyond the download.
Date Radar Countdown Stopwatch holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
Both ship on a similar rhythm, roughly every 5 days. Both last shipped on November 3, 2026.
| Parameter | WonderCalc | Date Radar Countdown Stopwatch |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (3 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 5 days | Every 5 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 5 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | SharkMonkey Apps | Jin Yu |
Customer experience
WonderCalc
Date Radar Countdown Stopwatch
In-app purchases
WonderCalc
No in-app purchases
Date Radar Countdown Stopwatch
- 3 month$0.293 Months
- 1 Year$0.991 Year
- Coffee sponsor$6.99
Questions
Is WonderCalc free?
Is Date Radar Countdown Stopwatch free?
Which has better reviews, WonderCalc or Date Radar Countdown Stopwatch?
Do WonderCalc or Date Radar Countdown Stopwatch have ads?
Which is updated more often, WonderCalc or Date Radar Countdown Stopwatch?
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