Comparison

*CalcMemo vs AboutMyDevice

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

Head to head
About

*CalcMemo

Features
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A calculator that remembers what your numbers were for. "Wait, what was this $385 for?" A normal calculator only keeps the answer. CalcMemo puts every calculation into a note, and lets you add a line of text in between. Quotes, budgets, splitting the bill, trip costs: come back later and you can still see what you calculated and why. ■ Made for • Quotes: unit price × quantity, with item names • Budgets: monthly bills in one folder, with a total • Splitting the bill: head count and rounding, all on record • Loans: compare monthly payments and total interest • Due dates: a monthly reminder on the 25th to pay rent ■ Calculator and notes on one screen Notes on top, calculator below. Every "=" adds the expression and answer to the note. Add headings and memos anywhere to keep it readable. Ans button recalls the last answer. ■ Scientific functions and statistics The f(x) tab adds trig, logs, powers, factorial, parentheses and memory (M+ M− MR MC). Select calculations in a note to see their sum, mean, max, min and standard deviation. ■ Money math built in • Loans (including balloon payments) • Loan prepayment simulator (Pro) • Savings plan (Pro) • Compound interest • Profit margin and discounts • Bill splitting with rounding • Sales tax • Date and day counting • Unit conversion (length, weight, temperature, area, volume, speed, fuel economy, time) Save any result to your note in one tap. ■ Reminders and widgets • Note reminders (Pro): once, daily, weekly or monthly. Tap the notification to open the note • Daily reminder: a nudge at the same time every day • Home Screen widgets (Pro): pinned notes, a folder, or one note's answer ■ Organized like a notes app Folders, pinning, grouping by date, reordering, moving between folders, and search across all notes. ■ iPad three-column layout Folders, notes and calculator on one screen, with a calculator you can float anywhere. ■ CalcMemo Pro (one-time purchase) Buy once, keep it forever. No subscription. • Unlimited folders and notes (free: 3 folders, 30 notes) • Lock folders with Face ID • Export notes as PDF or CSV • Savings and prepayment planners with charts • Home Screen widgets • Note reminders ■ Built to be trusted No ads, no account. Your notes stay on your device and are never uploaded. Back up and move to a new phone with JSON export. Available in 16 languages.

About

AboutMyDevice

Instantly view detailed hardware specifications for your iPhone and iPad. Benchmark your device's System on a Chip (SoC) and share results. Access information on your device's SoC, network, system, battery, and display.

Highlights
  • Detailed hardware specifications
  • SoC benchmarking
  • Network speed test
  • Battery status monitoring
  • Customizable section order
  • Copy section data to clipboard
Features
Read full description

AboutMyDevice shows you exactly what's inside your iPhone and iPad, clearly and instantly. You can also benchmark your iPhone or iPad System on a Chip (SoC) with Manhattan, the same single-core and multi-core benchmark on every platform AboutMyDevice runs on, and share your result as a card. Tap into five sections to see the specs that actually matter, pulled live from your device: • SoC — chip architecture, processor cores, active CPUs, clock speed, cache, and supported instruction sets • Network — interfaces, IPv4 and IPv6 addresses, hostname, plus a built-in speed test for latency, download, and upload • System — iOS version, kernel details, locale, time zone, memory, and storage usage • Battery — charge level, charging state, and Low Power Mode status • Display — logical and physical resolution, pixel ratio, orientation, and light/dark appearance DESIGNED TO BE FAST • Swipe left or right to move between sections, or tap to jump straight to one • Reorder the sections to put what you care about first — your layout is remembered next launch • Copy any section to the clipboard with a single tap • Refresh anytime to re-read live values • Built-in light and dark mode ABOUTMYDEVICE PLUS AboutMyDevice shows ads on iPhone and iPad. AboutMyDevice Plus is an optional auto-renewing subscription, billed every 1, 3 or 6 months, that removes them. Payment is charged to your Apple Account; the subscription renews unless cancelled at least 24 hours before the end of the period, and can be managed in your account settings. PRIVACY No account or sign-in is needed. Ads come from Google. Where the law requires it, Google's consent form appears first and Settings lets you change your ad privacy choices at any time. What the app collects, and why, is in the privacy policy. Whether you're checking specs before a sale, troubleshooting, comparing devices, or just curious about your hardware, AboutMyDevice gives you the full picture in seconds. Privacy policy: https://southbaycompute.com/aboutmydevice/privacy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

*CalcMemo4 screens
AboutMyDevice4 screens

Verdict

The call

The clearest difference is in-app purchases: *CalcMemo at none against AboutMyDevice's 3. *CalcMemo also leads on ads (none vs shown) and iOS requirement (16.4 vs 26.0). AboutMyDevice's advantage is update cadence (every 3 days vs weekly). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. AboutMyDevice sells 3 in-app purchases, starting at $0.99 per month. *CalcMemo asks for nothing beyond the download.

UpkeepUpdate frequency

*CalcMemo ships an update weekly, AboutMyDevice every 3 days. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.

Scorecard4 real differences · 5 level
*CalcMemo versus AboutMyDevice: the parameters behind the verdict, then further details
Parameter*CalcMemoAboutMyDevice
PriceFreeFree
Rating—3.5 (2 ratings) — better
Number of ratings—2 — better
Update frequencyWeeklyEvery 3 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Ad-supported
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS16.4 — better26.0
Further details — not scored
Size37 MB34 MB
Age rating4+4+
DeveloperTomoyuki FukuzawaSouth Bay Compute, LLC

In-app purchases

None

*CalcMemo

No in-app purchases

3 purchases

AboutMyDevice

Subscriptions3
  • AboutMyDevice Plus$0.991 Month
  • AboutMyDevice Plus$1.993 Months
  • AboutMyDevice Plus$2.996 Months

Questions

Is *CalcMemo free?
*CalcMemo is free to download, with no in-app purchases.
Is AboutMyDevice free?
AboutMyDevice is free to download, with in-app purchases available.
Do *CalcMemo or AboutMyDevice have ads?
AboutMyDevice shows ads; *CalcMemo does not.
Which is updated more often, *CalcMemo or AboutMyDevice?
*CalcMemo ships an update weekly, and AboutMyDevice every 3 days. Most recently, *CalcMemo was updated on November 9, 2026 and AboutMyDevice on November 10, 2026.

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