Comparison

Robot Gladiator League vs 555 Timer & Oscillators Guide

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

Head to head
About

Robot Gladiator League

Features
Read full description

Newton's Attic: Robot Gladiator League. Companion app for students, coaches, and spectators.

About

555 Timer & Oscillators Guide

Features
Read full description

Master the design of oscillators and waveform generators using 555 timer integrated circuits, digital logic integrated circuits, operational amplifiers, and transistors. The application provides a comprehensive collection of over 130 tutorials and circuit diagrams, covering 555 timer circuits and practical applications, CMOS 4000 series logic oscillators, TTL 74LS and 74HC series oscillators, operational amplifier–based waveform generators, and transistor multivibrators. Designed for electronics beginners, students, hobbyists, and professional engineers, the app serves as a complete reference and learning tool for designing, understanding, and building oscillators, multivibrators, pulse generators, and waveform circuits commonly used in both analog and digital electronics. In addition to tutorials and schematics, the app includes built-in calculators for frequency, timing, duty cycle, and component value estimation, helping users quickly calculate and adjust circuit parameters. All topics are presented with clear circuit diagrams and detailed explanations. Available in 14 Languages: β€’ English, French, German, Indonesian, Italian, Japanese, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Turkish, Ukrainian, and Vietnamese β€” study in your native language! Covered Topics: β€’ 555 Timer IC Series β€’ Astable, monostable, and bistable modes β€’ Pulse Width Modulation (PWM) β€’ Voltage conversion circuits β€’ Sensor and external module interfacing β€’ CMOS Logic Oscillators β€’ CMOS 4000 series circuits β€’ Astable, monostable, and bistable modes β€’ Gated CMOS oscillators β€’ TTL / HC Logic Oscillators β€’ TTL 74LS series circuits β€’ 74HC series logic oscillators β€’ Astable and monostable modes β€’ Operational Amplifier Oscillators β€’ Sine wave generators β€’ Square-wave pulse generators β€’ Triangle wave generators β€’ Transistor-Based Oscillators β€’ Transistor-Based Astable multivibrators β€’ Transistor-Based Monostable multivibrators The content is regularly updated and expanded with each new release, ensuring the latest tutorials and circuit examples are always available.

Screenshots

Robot Gladiator League4 screens
555 Timer & Oscillators Guide4 screens

Verdict

The call

The clearest difference is ads: Robot Gladiator League at none against 555 Timer & Oscillators Guide's shown. Robot Gladiator League also leads on iOS requirement (12.4 vs 16.0). 555 Timer & Oscillators Guide's advantage is update cadence (every 5 months vs every 25 months). On price, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Robot Gladiator League ships an update every 25 months, 555 Timer & Oscillators Guide every 5 months. The most recent releases landed on June 5, 2026 and September 24, 2026 respectively.

Scorecard3 real differences Β· 3 level
Robot Gladiator League versus 555 Timer & Oscillators Guide: the parameters behind the verdict, then further details
ParameterRobot Gladiator League555 Timer & Oscillators Guide
PriceFreeFree
Update frequencyEvery 25 monthsEvery 5 months β€” better
AdsNo β€” betterYes
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad
Requires iOS12.4 β€” better16.0
Further details β€” not scored
Size20 MB24 MB
Age rating4++4
DeveloperNewton's Attic Inc.ALG Software Lab

In-app purchases

None

Robot Gladiator League

No in-app purchases

None

555 Timer & Oscillators Guide

No in-app purchases

Questions

Is Robot Gladiator League free?
Robot Gladiator League is free to download, with no in-app purchases.
Is 555 Timer & Oscillators Guide free?
555 Timer & Oscillators Guide is free to download, with no in-app purchases.
Do Robot Gladiator League or 555 Timer & Oscillators Guide have ads?
555 Timer & Oscillators Guide shows ads; Robot Gladiator League does not.
Which is updated more often, Robot Gladiator League or 555 Timer & Oscillators Guide?
Robot Gladiator League ships an update every 25 months, and 555 Timer & Oscillators Guide every 5 months. Most recently, Robot Gladiator League was updated on June 5, 2026 and 555 Timer & Oscillators Guide on September 24, 2026.

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