Comparison

NASA Battery Viewer vs one.com Mail

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

Head to head
About

NASA Battery Viewer

Monitor battery information from a Bluetooth device with customizable display options. Configure units, view charging status, and rename your device for easy identification.

Highlights
  • Customizable display fields
  • Primary field selection
  • Charging/discharging indicator
  • Unit property configuration
  • Bluetooth LE communication
  • Automatic device connection
  • Unit renaming
Features
Read full description

The NASA Battery Viewer displays the battery monitor information in a clear and simple way. The app allows you to configure which fields are displayed and where, allowing you to choose the most important field as the primary field. The charging/discharging display field will appear in red when discharging. The app also allows you to set the unit's properties (capacity, operating temperature, unit name). The app communicates with the BM-1 unit over Bluetooth LE. It will automatically connect to your BM-1 unit with the configured Bluetooth name. If the unit's name doesn't match any BM-1 units in range will be offered to you so you can choose to connect. The unit rename feature allows you to assign your own name to your BM-1 unit.

About

one.com Mail

Access and manage your email on the go with this intuitive application. Read, write, and organize your messages efficiently from your mobile device, ensuring you stay connected to important conversations without needing a computer.

Highlights
  • Manage multiple email accounts
  • Organize inbox with filters
  • Read emails in distraction-free layout
  • Compose and send emails
  • Receive new email notifications
  • Perform actions on multiple emails
Features
Read full description

Stay connected to your inbox wherever you are. Read, write, and manage your email from your phone, whether you're at work, at home, or on the move. The one.com Mail app gives you everything you need in one place. Read long emails comfortably, reply in seconds, keep your inbox organized, and stay connected to the conversations that matter most. Designed for a fast and intuitive experience, the app helps you stay productive without opening your laptop. Manage your inbox โ€ข Perform actions on multiple emails at once. โ€ข Add several accounts and easily switch between them. โ€ข Filter unread emails to find what matters faster. โ€ข Get notifications about new emails. Read with ease โ€ข Read emails in a clean, distraction-free layout. โ€ข View newsletters, images, and attachments comfortably. โ€ข Enjoy a reading experience designed for your phone. Reply in seconds โ€ข Write and send emails from your phone. โ€ข Switch seamlessly between reading and replying.

Screenshots

NASA Battery Viewer3 screens
one.com Mail3 screens

Verdict

The call

The clearest difference is review sentiment: NASA Battery Viewer at 100% against one.com Mail's 0%. NASA Battery Viewer also leads on iOS requirement (11.3 vs 15.0). one.com Mail's advantage is update cadence (every 9 days vs every 4 months). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

NASA Battery Viewer ships an update every 4 months, one.com Mail every 9 days. The most recent releases landed on November 2, 2026 and November 1, 2026 respectively.

Scorecard3 real differences ยท 5 level
NASA Battery Viewer versus one.com Mail: the parameters behind the verdict, then further details
ParameterNASA Battery Viewerone.com Mail
PriceFreeFree
Positive reviews100.0% of reviews โ€” better0.0% of reviews
Update frequencyEvery 4 monthsEvery 9 days โ€” better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.3 โ€” better15.0
Further details โ€” not scored
Size9 MB75 MB
Age rating4+4+
DeveloperNeverest LimitedOne.com A/S

Customer experience

NASA Battery Viewer

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

one.com Mail

Written reviews2 reviews
Positive0.0%
Neutral50.0%
Negative50.0%

In-app purchases

None

NASA Battery Viewer

No in-app purchases

None

one.com Mail

No in-app purchases

Questions

Is NASA Battery Viewer free?
NASA Battery Viewer is free to download, with no in-app purchases.
Is one.com Mail free?
one.com Mail is free to download, with no in-app purchases.
Do NASA Battery Viewer or one.com Mail have ads?
Neither NASA Battery Viewer nor one.com Mail shows ads.
Which is updated more often, NASA Battery Viewer or one.com Mail?
NASA Battery Viewer ships an update every 4 months, and one.com Mail every 9 days. Most recently, NASA Battery Viewer was updated on November 2, 2026 and one.com Mail on November 1, 2026.

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