Comparison

Royal Conversion Battery vs VoltLog

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Royal Conversion Battery

Features
Read full description

The App is an easy-to-use device that visibly and effectively displays how long the battery's charge or discharge will last. It also calculates how much power the battery has versus how much charge is going out, while providing the approximate amount of time the battery will remain charged. There is a wide range of battery monitors, depending on the specific application. Some of the more identifiable monitors include RV battery monitors, marine battery monitors and car battery monitoring systems.

About

VoltLog

Features
Read full description

VoltLog is a field tool for FPV pilots who use LiPo, LiHV, and Li-ion battery packs without smart battery electronics. After a flight, log the pack voltage and VoltLog shows the safety status of each battery on a clear, color-coded dashboard. The goal is simple: know which packs are safe for storage, which need charging, and which should not be left full for too long. Built for FPV battery routines: - Track battery packs with name, brand, cell count, capacity, chemistry, and cycle count - Log voltage per cell with a large custom keypad - See STORAGE, CHARGED, FULL, FULL RISK, DISCHARGED, and CRITICAL states at a glance - Open full cycle history for every pack - Set global and per-battery alert timing - Use local notifications for risky full packs and low-voltage reminders - Work offline-first with local Drift storage - Secure or switch accounts with Supabase Auth when you want cloud-backed data VoltLog is not a charger, cell checker, or battery management system. It is a practical logbook for pilots who already measure voltage and want a faster way to keep track of many packs. Designed for the field, not a desk: - High-contrast dark dashboard - Large battery tiles - Fast voltage entry without the system keyboard - Battery archive for retired packs - English and Polish interface If your FPV case has more packs than memory can reliably track, VoltLog gives you one place to see what needs attention before battery degradation becomes expensive. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Royal Conversion Battery4 screens
VoltLog4 screens

Verdict

The call

The clearest difference is in-app purchases: Royal Conversion Battery at none against VoltLog's 3. Royal Conversion Battery also leads on iOS requirement (12.0 vs 16.0). VoltLog's advantage is update cadence (every 10 days vs every 12 months). On price, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. VoltLog sells 3 in-app purchases, starting at $9.99 per month. Royal Conversion Battery asks for nothing beyond the download.

UpkeepUpdate frequency

Royal Conversion Battery ships an update every 12 months, VoltLog every 10 days. The most recent releases landed on November 8, 2026 and November 9, 2026 respectively.

Scorecard3 real differences ยท 3 level
Royal Conversion Battery versus VoltLog: the parameters behind the verdict, then further details
ParameterRoyal Conversion BatteryVoltLog
PriceFreeFree
Update frequencyEvery 12 monthsEvery 10 days โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPod โ€” betteriPhone
Requires iOS12.0 โ€” better16.0
Further details โ€” not scored
Size43 MB54 MB
Age rating4+4+
DeveloperSterling PowerFilip Rusin

In-app purchases

None

Royal Conversion Battery

No in-app purchases

3 purchases

VoltLog

Subscriptions2
  • Monthly Pro$9.991 Month
  • Yearly Pro$39.991 Year
One-time1
  • Lifetime Pro$99.99

Questions

Is Royal Conversion Battery free?
Royal Conversion Battery is free to download, with no in-app purchases.
Is VoltLog free?
VoltLog is free to download, with in-app purchases available.
Do Royal Conversion Battery or VoltLog have ads?
Neither Royal Conversion Battery nor VoltLog shows ads.
Which is updated more often, Royal Conversion Battery or VoltLog?
Royal Conversion Battery ships an update every 12 months, and VoltLog every 10 days. Most recently, Royal Conversion Battery was updated on November 8, 2026 and VoltLog on November 9, 2026.

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