Inflation Calculator vs Watch Spring
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Inflation Calculator
Easily determine the present-day value of past prices using up-to-date inflation data. This tool supports 22 international currencies and provides yearly updates, making it simple to understand historical cost comparisons.
- Calculate dollar value from 1800-2025
- Supports 22 international currencies
- Yearly inflation data updates
- Apple Watch companion app
- Simple and intuitive interface
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NEW: TIME MACHINE AND ASK - Time Machine: pick any year and see what everyday things cost, with charts of prices over time. - Ask: ask anything about money and the past, answered with real inflation data. - Share any result or chart with a friend. Ever see a price from the past and wonder how much that would cost today? With Inflation Calculator, the answer is just a tap away. Features include: - Calculate the value of the dollar over time from 1800 to 2026. - Support for 22 international currencies: - US Dollar - Euro - British Pound - Canadian Dollar - Australian Dollar - New Zealand Dollar - Japanese Yen - Swiss Franc - Chinese Yuan - Swedish Krona - Mexican Peso - Norwegian Krone - South Korean Won - Turkish Lira - Brazilian Real - South African Rand - Indian Rupee - Russian Ruble - Israeli Sheqel - Indonesian Rupiah - Saudi Arabian Riyal - Colombian Peso - Yearly updates with the latest inflation data. - Simple and intuitive. No ads or distracting popups. PREMIUM Premium adds charts for every price and as many Ask questions as you like. Choose a yearly subscription (new subscribers get a 7-day free trial) or a one-time lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and you can manage or cancel them anytime in your Apple Account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://dyoburon.com/inflation-calc-privacy-policy
Watch Spring
Track the accuracy and wear of your mechanical watches. Analyze trends with charts, log service history, and keep notes on watch details. See how your collection performs over time and manage your ownership history.
- Accuracy tracking and trend charts
- Wear calendar and statistics
- Watch collection summary cards
- Service and repair logging
- Ownership history timeline
- Time-setting clock
- CSV import/export
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Track. Analyse. Enjoy. Track mechanical watch accuracy and see drift over time. Log quick time-points, visualise trends with simple charts, keep notes about watch details, track service history, and balance your wrist time across your collection. Why it’s useful • Understand seconds-per-day accuracy and long-term behaviour • Spot issues after knocks or before/after a service • See which watches get the most wear • Keep track of key facts about your watches in one place Features • Accuracy charts & trend • Wear calendar & statistics • Watch collection summary shown as info cards; for a quick snapshot of key facts • Log servicing and repairs with notes and dates; see the before/after impact on accuracy • View your watch ownership history timeline • Time-setting clock (seconds-accurate) • Daily reminders • Import/Export CSV; share charts • iPhone-native, no ads, data stays on device How it works 1. Press and hold on the on-screen clock 2. When your watch matches the time, lift your finger 3. Watch Spring logs the time-point, updates charts, and marks your wear
Screenshots
Verdict
The clearest difference is price: Inflation Calculator at Free against Watch Spring's $3.99. Inflation Calculator also leads on ratings volume (3.6K vs 3) and iOS requirement (16.0 vs 26.0). Watch Spring's advantage is in-app purchases (none vs 4) and update cadence (every 3 weeks vs every 3 months). On rating, 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
Inflation Calculator is free to download; Watch Spring costs $3.99 up front. Inflation Calculator sells 4 in-app purchases, starting at $7.49 per year. Watch Spring asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for Inflation Calculator against 5.0 for Watch Spring. That said, the two scores are not equally well evidenced: Inflation Calculator has 3.6K ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 85% of Inflation Calculator's written reviews are positive against 100% of Watch Spring's.
Inflation Calculator ships an update every 3 months, Watch Spring every 3 weeks. The most recent releases landed on November 1, 2026 and October 27, 2026 respectively.
| Parameter | Inflation Calculator | Watch Spring |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 4.9 (3.6K ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 85.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 3.6K — better | 3 |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free — better | Paid |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 4 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Dylan Burton | Simon Greig |
Customer experience
Inflation Calculator
Watch Spring
Bugs and requests
Inflation Calculator
Reported bugs
2 issues- Not updated beyond 2024
- Caps out at 2020 for some countries
Requested features
4 requests- Update to 2025
- Add support for more currencies
- Improve design and usability
- Allow direct data input
Watch Spring
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Inflation Calculator
- Premium (yearly)$7.491 Year
- Premium (yearly)7 Days trial$14.991 Year
- Premium (lifetime)$14.99
- Premium (lifetime)$29.99
Watch Spring
No in-app purchases
Questions
Is Inflation Calculator free?
Is Watch Spring free?
Which has better reviews, Inflation Calculator or Watch Spring?
Do Inflation Calculator or Watch Spring have ads?
Which is updated more often, Inflation Calculator or Watch Spring?
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