Comparison

MemoCal Plus vs Battery Grapher

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

Head to head
About

MemoCal Plus

This calendar app allows you to add handwritten notes, photos, and text directly to your schedule. Customize backgrounds, use various pen colors and icons, and even take photos within the app for diaries. It supports multiple languages and offers an undo function for edits.

Highlights
  • Handwritten memos
  • Photo integration
  • Text input with tags
  • Customizable backgrounds
  • Multiple pen colors and icons
  • Undo function
Features
Read full description

MemoCal Plus is a simple calendar app that lets you save your schedule and notes by handwriting on iPad. Just like writing on a paper calendar, you can freely keep plans, daily notes, family records, travel memories, meal logs, childcare notes, and more. View the monthly calendar on a wide screen, tap a date to enlarge it, and write directly with a pen or your finger. It feels familiar and simple, like writing on a paper calendar. You can also place photos, enter text with sticky notes, and decorate your calendar with icons and wallpapers. MemoCal Plus is not just an app for managing schedules. It is a calendar for keeping small moments from everyday life in your own way. Main features - Handwritten notes on a monthly calendar - Tap a date to open a larger writing area - Handwriting with a pen or finger - Place, resize, rotate, and arrange photos - Set photos as backgrounds - Text entry with sticky notes - More than 100 icons - Change background colors - Original wallpaper designs - Undo function - Pen color, pen size, and eraser size settings - Share and save calendar and handwriting screens Recommended for - People who like writing on paper calendars - People who want to keep handwritten schedules and notes - Families who want to record plans and daily events - People who want to save memories with photos - People who want to keep childcare, meal, or travel records - Anyone looking for a simple, intuitive calendar app Supported holiday calendars MemoCal Plus supports holidays for Japan, the US, Canada, Brazil, the UK, France, Italy, Germany, Spain, Australia, South Korea, and more. You can also turn off holiday display.

About

Battery Grapher

This app tracks your device's battery usage over time and uses your historical data to predict future battery levels. It's designed for low energy consumption and offers customizable notifications to help you manage charging times.

Highlights
  • Historical battery level graphing
  • Smart future battery predictions
  • Low energy consumption design
  • Customizable battery notifications
  • Supports all complications and widget sizes
Features
Read full description

Battery Grapher graphs your historical battery levels and learns your habits to make smart predictions on what your future battery levels will be. Developed specifically with energy consumption in mind, Battery Grapher has almost no impact on battery life. SMART PREDICTIONS Battery Grapher uses historical battery levels to intelligently predict what your battery level will be throughout the rest of the day, allowing you to plan when to next charge your device. The longer you have Battery Grapher installed, the more accurate future battery level predictions will be. LOW ENERGY CONSUMPTION Battery Grapher is made for people who want to extend the battery life, meaning that low energy usage is a priority. The app runs a background task only once an hour, and doesn't require a network connection, which keeps energy consumption extremely low. CUSTOMIZABLE NOTIFICATIONS Battery Grapher allows you to set notifications that fit your needs. You can get the app to notify you when you battery drops below a preset percentage, or if you only have a certain number of hours left before your battery runs out. (currently only available on watchOS) ALL COMPLICATIONS & WIDGET SIZES SUPPORTED Battery Grapher supports all complications & widget sizes. Complications can show hours before needing to charge, or battery %. Both complications and widgets are customizable from within the app.

Screenshots

Battery Grapher4 screens

Verdict

The call

The clearest difference is update cadence: Battery Grapher at every 2 months against MemoCal Plus's every 6 months. Battery Grapher also leads on ratings volume (155 vs 23) and price ($1.99 vs $3.99). MemoCal Plus's advantage is iOS requirement (13.0 vs 15.0). On rating, review sentiment, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

MemoCal Plus costs $3.99 and Battery Grapher $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.3 for MemoCal Plus against 4.3 for Battery Grapher. That said, the two scores are not equally well evidenced: Battery Grapher has 155 ratings behind it against 23, so its average is the more settled of the two. Written reviews split almost evenly too, at 62% and 61% positive.

UpkeepUpdate frequency

MemoCal Plus ships an update every 6 months, Battery Grapher every 2 months. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.

Scorecard5 real differences · 5 level
MemoCal Plus versus Battery Grapher: the parameters behind the verdict, then further details
ParameterMemoCal PlusBattery Grapher
Price$3.99$1.99 — better
Rating4.3 (23 ratings)4.3 (155 ratings) — better
Positive reviews62.2% of reviews — better61.2% of reviews
Number of ratings23155 — better
Update frequencyEvery 6 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPadiPhone, iPad, iPod, Apple Watch — better
Requires iOS13.0 — better15.0
Further details — not scored
Size12 MB5 MB
Age rating4+4+
Developer株式会社HARISHJoshua Bird

Customer experience

MemoCal Plus

All ratings22 ratings
Positive72.7%
Neutral18.2%
Negative9.1%
Written reviews37 reviews
Positive62.2%
Neutral18.9%
Negative18.9%

Battery Grapher

All ratings154 ratings
Positive81.8%
Neutral5.8%
Negative12.3%
Written reviews147 reviews
Positive61.2%
Neutral7.5%
Negative31.3%

Bugs and requests

MemoCal Plus

Not enough reviews yet to summarise bugs or requests.

Battery Grapher

Reported bugs

18 issues
  • Widget not displaying on initial installation
  • Complication shows stale data and doesn't refresh automatically
  • Battery percentage stuck at incorrect values (e.g., 73%, 68%)
  • Accuracy status fluctuates rapidly between good and bad
  • Missing data warnings despite app being in dock
Show 13 more
  • Charge-discharge cycle recognition fails (shows straight lines)
  • App crashes on iPad and certain iOS versions
  • Complication capped at 47-48 hours on Apple Watch Ultra
  • Incorrect battery readings after full charge
  • Notifications arrive delayed or not at all
  • App shows charging when device is not charging
  • Data loss after watch pairing/unpairing
  • Graphs display inverted or incorrect usage patterns
  • 24-hour time format setting non-functional
  • Text cutoff on complication at bottom of watch face
  • Accuracy never improves beyond 'bad' status
  • App requires manual watch face switching to update
  • Predictions wildly inaccurate on newer Apple Watch models

Requested features

18 requests
  • Watch complication for Smart Stack (watchOS 10+)
  • Support for Apple Watch Ultra with correct 36-hour battery display
  • Low power mode detection and separate prediction profiles
  • Force refresh button in app
  • More frequent update intervals (user-configurable)
Show 13 more
  • 24-hour time format option
  • Charging time estimation while device is charging
  • Notifications for full charge completion
  • Battery percentage display in widgets
  • MacBook app version
  • App-specific battery drain identification
  • Historical data view (weekly/monthly)
  • Cross-device battery information (iPhone battery on Watch, etc.)
  • Landscape mode graph expansion
  • Multiple widget size options
  • Portuguese/Brazilian Portuguese localization
  • Manual dark mode toggle for iPhone
  • Watch complication for multiple stacks

In-app purchases

None

MemoCal Plus

No in-app purchases

None

Battery Grapher

No in-app purchases

Questions

Is MemoCal Plus free?
MemoCal Plus costs $3.99, with no in-app purchases.
Is Battery Grapher free?
Battery Grapher costs $1.99, with no in-app purchases.
Which has better reviews, MemoCal Plus or Battery Grapher?
Battery Grapher is rated higher. MemoCal Plus averages 4.3 out of 5 from 23 ratings, while Battery Grapher averages 4.3 from 155 ratings.
Do MemoCal Plus or Battery Grapher have ads?
Neither MemoCal Plus nor Battery Grapher shows ads.
Which is updated more often, MemoCal Plus or Battery Grapher?
MemoCal Plus ships an update every 6 months, and Battery Grapher every 2 months. Most recently, MemoCal Plus was updated on October 23, 2026 and Battery Grapher on October 22, 2026.

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