Comparison

SL拡大鏡 vs O'der stack

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

Head to head
About

SL拡大鏡

Features
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SL(シンプルラボ) 第2弾は余計なものを省いたシンプルな拡大鏡になります。 「多機能が面倒なあなたへ」 --------機能紹介-------- ・LED 少し暗いところも照らして見やすくします。 ・表示消去 画面に映るアイコンと広告を消せます。 ・ズーム 下のバーによりズーム倍率を調整できます。 これからもSL(シンプルラボ)共々ヒヨコラボを宜しくお願いします。

About

O'der stack

Features
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O'der stack is a scientific calculator that is precise for up to 38 digits and is highly flexible. It can be used for various purposes, from learning to professional use, and has many functions that are convenient when mastered. The formulas described can be saved together with the results of the calculations and easily shared among members. Also, labels and memos can be set for formulas as well as each item that makes up the formulas. For example, by adding the label "radius" to "50" in 2 x 50 x π, it is possible to make the meaning of the formula even clearer. It is also perfect for entering explanations of formulas as memos and using them as tools to assist in learning. O'der stack offers two plans, the Pro plan which offers unlimited use of all functions, as well as the Free plan which makes it usable as an easy-to-use scientific calculator. —Functions— 1. A powerful editing function that allows partial overwriting of values without erasing the formula 2. Label and memo functions to support the understanding of formulas 3. A clipboard function that allows formulas to be pasted in notebooks, etc. 4. Setting the precision of calculations from 0 digits to 38 digits 5. Setting units (degrees/radians) for trigonometric functions 6. Setting the format of displaying results of calculations (normal notation, scientific notation, and percentage notation) 7. Basic functions (exponentiation and nth root) 8. Undo function —Pro plan— Please download O'der stack and try out the Pro plan for free for seven days. In addition to all the functions in the Free plan, the Pro plan allows for the activation of even more convenient functions. 1. Functions to save and load formulas and calculation histories 2. Function to share formulas and calculation histories 3. A sub-formula function that allows for the breakdown into several formulas and simple entry 4. 18 types of versatile and widely-used functions 5. 652 highly precise numerical and physical constants and observed values 6. Setting the format of displaying results of calculations (binary, octal, hexadecimal)        - Each item can be selected from 8bit, 16bit, 24bit, 32bit, 64bit and 128bit.        - Supports negative values and decimal points.        - Negative values are displayed in complement. After the free trial has ended, if you would like to continue to use the Pro plan, a purchase of a non-autorenew-subscriptionis required. For a subscription, you can choose either a monthly purchase or yearly purchase, and the yearly purchase allows you to enjoy a discount worth two months of monthly purchases. Payment will be charged to your Apple ID account at the confirmation of purchase. If you purchase a plan during the effective period, it will be extended by the number of days of the purchased plan from the end date. The plan is effective on all devices linked to the purchased Apple ID account. Privacy policy https://ictfractal.github.io/official/PrivacyPolicy.html Terms of service https://ictfractal.github.io/official/AppTerms.pdf Disclaimer ICT Fractal Inc. does not guarantee the accuracy, credibility, and compatibility of the results of calculations and information provided through this app. Furthermore, it does not bear the responsibility for direct or indirect damages that might occur through this app.

Screenshots

SL拡大鏡3 screens
O'der stack4 screens

Verdict

The call

The clearest difference is in-app purchases: SL拡大鏡 at none against O'der stack's 3. SL拡大鏡 also leads on iOS requirement (12.0 vs 15.6). O'der stack's advantage is ads (none vs shown) and update cadence (every 3 months vs every 57 months). 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. O'der stack sells 3 one-off in-app purchases. SL拡大鏡 asks for nothing beyond the download.

UpkeepUpdate frequency

SL拡大鏡 ships an update every 57 months, O'der stack every 3 months. The most recent releases landed on October 5, 2026 and October 1, 2026 respectively.

Scorecard4 real differences · 2 level
SL拡大鏡 versus O'der stack: the parameters behind the verdict, then further details
ParameterSL拡大鏡O'der stack
PriceFreeFree
Update frequencyEvery 57 monthsEvery 3 months — better
AdsYesNo — better
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better15.6
Further details — not scored
Size2 MB59 MB
Age rating4+4+
Developerhiyoshi kiyotakaICT Fractal Inc.

In-app purchases

None

SL拡大鏡

No in-app purchases

3 purchases

O'der stack

One-time3
  • Free trial for 7 days.Free
  • Activate for 1 month.$0.99
  • Activate for year.$9.99

Questions

Is SL拡大鏡 free?
SL拡大鏡 is free to download, with no in-app purchases.
Is O'der stack free?
O'der stack is free to download, with in-app purchases available.
Do SL拡大鏡 or O'der stack have ads?
SL拡大鏡 shows ads; O'der stack does not.
Which is updated more often, SL拡大鏡 or O'der stack?
SL拡大鏡 ships an update every 57 months, and O'der stack every 3 months. Most recently, SL拡大鏡 was updated on October 5, 2026 and O'der stack on October 1, 2026.

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