Comparison

Grades & To vs Voltages S

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

Head to head
About

Grades & To

Features
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Study-Guru โ€“ Your perfect app for successful studying Study-Guru is the ultimate app for better organizing and structuring your studies. Whether it's lectures, exams, or to-do lists โ€“ with Study-Guru, you'll always have an overview and can concentrate on what's important. Why Study-Guru? Unlike conventional to-do apps, Study-Guru has been developed specifically for students. Our unique combination of modules, tasks, and calendar integration ensures that you not only have everything in view, but can also plan more efficiently. Features at a glance: โ€ข Create modules: Organize your studies by creating modules for each semester. This keeps everything clear and orderly. โ€ข Add tasks: Plan tasks specifically for your modules. Never miss a deadline again and work towards your goals in a structured way. โ€ข Calendar integration: Each task can be linked directly to a calendar entry. Tasks without an entry are displayed prominently so you know exactly where action is needed. Tasks with a future calendar entry disappear from your overview so you can focus on what matters now. โ€ข Track exams: Add exams to your modules, enter grades, and keep track of your progress. Why is this useful? Study-Guru helps you make better use of your time. Our smart logic shows you exactly what's coming up and hides what's planned for later. This allows you to focus on the relevant tasks and avoid stress. Who is Study-Guru suitable for? Whether you're a bachelor's or master's student, Study-Guru is the perfect solution for anyone who wants to organize their studies better. Try it out! Download Study-Guru and start organizing your semester right away. Plan efficiently, work with less stress, and achieve your goals! Make your studies easier โ€“ with Study-Guru.

About

Voltages S

Features
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This app invites to explorations into electricity and the serial circuit. You can freely explore a simulated serial circuit in order to find out electricity facts. The simulation not only reflects real circuit behaviour, but also provides insights into electron flow that real experiments cannot provide. "Wrong" usage can be tried out without fear of destroying components while clearly warning about potential destroyment. Experimentation is guided by the following booklets provided gerin the app: - Knowledge: learn facts about the circuit - Puzzles: solve puzzles on levels from beginner to expert - Experiments: explore unusual situations - Tricks: achieve surprising results The booklets provide helpful hints if tasks cannot be solved on their own. The app greatly supports class room learning as well as self motivated learning and explorations.

Screenshots

Grades & To4 screens
Voltages S4 screens

Verdict

The call

The clearest difference is price: Grades & To at Free against Voltages S's $0.99. Grades & To also leads on update cadence (every 10 days vs every 7 months). On ads, in-app purchases, device support and iOS requirement 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

Grades & To is free to download; Voltages S costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Grades & To ships an update every 10 days, Voltages S every 7 months. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.

Scorecard2 real differences ยท 4 level
Grades & To versus Voltages S: the parameters behind the verdict, then further details
ParameterGrades & ToVoltages S
PriceFree โ€” better$0.99
Update frequencyEvery 10 days โ€” betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.6
Further details โ€” not scored
Size4 MB2 MB
Age rating4+4+
DeveloperTimo KamphausFrank Kowalewski

In-app purchases

None

Grades & To

No in-app purchases

None

Voltages S

No in-app purchases

Questions

Is Grades & To free?
Grades & To is free to download, with no in-app purchases.
Is Voltages S free?
Voltages S costs $0.99, with no in-app purchases.
Do Grades & To or Voltages S have ads?
Neither Grades & To nor Voltages S shows ads.
Which is updated more often, Grades & To or Voltages S?
Grades & To ships an update every 10 days, and Voltages S every 7 months. Most recently, Grades & To was updated on November 8, 2026 and Voltages S on October 30, 2026.

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