Convertools vs ChargeWatt
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Convertools
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Convertools bring to you variety of unit converter to ease your time from converting the value yourself Currently Convertools have 3 types of unit to be convert: - Length - Mass - Speed In the future we will bring more unit to be able convert for you guys
ChargeWatt
Monitor your iPhone's charging speed in watts and track your charging history. Compare chargers, analyze battery health, and receive notifications when your desired charge level is reached. Features include Live Activity, widgets, and Siri integration.
- Real-time charging speed in watts
- Charge history recording
- Charger comparison
- Battery health tracking
- Customizable charge alarms
- Live Activity and widgets
- Data export to CSV
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ChargeWatt shows how fast your iPhone is charging, in watts, and keeps a record of every charge. Find your fastest charger, compare your cables and keep an eye on your battery's health. APPLE WATCH CHARGING SPEED (PRO) - Your Apple Watch's estimated watts, time to full and 20–80% time, on your iPhone - Open ChargeWatt on the watch on its charger, and again after it charges 10–15% more - Your iPhone's charge on your Apple Watch and in a complication, free The watch reports its battery level in 5% steps, so the watts are an estimate from its readings. CHARGING POWER IN WATTS - Estimated charging power while your iPhone charges - A speed curve for every charge, plus a battery level chart - With the free ChargeWatt shortcut: watts within 1–2 minutes of plugging in, even with the app closed - Without the shortcut: keep the app open until the battery has charged about 10% iOS doesn't share charging current with apps, so ChargeWatt estimates the watts: it times how fast the battery level rises and multiplies that speed by your iPhone model's battery capacity. Right after you plug in, the shortcut reads the level in 1% steps. Values are always labeled "Estimated". EVERY CHARGE, RECORDED - Start, end, levels, duration, speed, thermal state and charger - Keeps recording while the app is closed, with one ready-made shortcut (set up in a minute, step by step in the app) - Recognizes charges in the car through CarPlay or driving motion data COMPARE CHARGERS - See which charger takes your iPhone from 20% to 80% the fastest - Charging habits: overnight charging, charging to 100%, hot charges - Practical tips for your battery BATTERY HEALTH LOG - Enter Maximum Capacity and cycle count from iOS Settings - Follow them on a chart over time - A monthly reminder to add a new entry CHARGE ALARM - Get a notification when your battery reaches the level you choose, like 80% ALWAYS IN VIEW - Live Activity on the Lock Screen and in the Dynamic Island while charging - Home Screen, Lock Screen and StandBy widgets - The Live Activity and the widgets show the watts measured right after you plug in; they need the shortcut - Siri and Shortcuts actions - Export your raw data as CSV CHARGEWATT PRO - One-time in-app purchase, no subscription - Unlocks the widgets, the Live Activity and Dynamic Island, charger comparison, charging habits and tips, the charge alarm, car charge detection and 6 extra app icons - Watts, the record of every charge, the battery health log, Shortcuts and CSV export stay free PRIVATE BY DESIGN - No account, no ads, no tracking - Your data stays on your iPhone - Available in 51 languages
Screenshots
Verdict
The clearest difference is in-app purchases: Convertools at none against ChargeWatt's 1. Convertools also leads on iOS requirement (12.0 vs 18.0). ChargeWatt's advantage is update cadence (every 2 days vs every 39 months). On price, 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. ChargeWatt sells 1 one-off in-app purchase. Convertools asks for nothing beyond the download.
Convertools ships an update every 39 months, ChargeWatt every 2 days. The most recent releases landed on November 7, 2026 and November 10, 2026 respectively.
| Parameter | Convertools | ChargeWatt |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 39 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac, Apple Watch — better |
| Requires iOS | 12.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 56 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Ying Pheng Neoh | Osman Cengeri |
In-app purchases
Convertools
No in-app purchases
ChargeWatt
- ChargeWatt Pro$4.99





