Comparison

iformula pro vs Terminal Drill

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

Head to head
About

iformula pro

This comprehensive math learning platform offers over 4000 equations and functions across various advanced topics. It features a powerful search, a scientific calculator, note-taking, and bookmarking capabilities to aid academic study and professional reference.

Highlights
  • Over 4000 math equations
  • Full-featured equation search
  • New scientific calculator
  • Notes system
  • Bookmarking for favorite equations
  • Dual language support (English & German)
Features
Read full description

iformula pro is much more than a simple math equation library app like other apps, it is a math productive learning platform and has become a standard for higher math education at schools and universities ! iformula pro was specially developed for academic students, engineers, high school students, math course students and for math home schooling and distance learning, as well as a refresher for scientist with higher mathematics skills and all people, who are interested in math. Failing an exam or can't go on with your calculations, because not knowing an equation, belong to the past ! iformula pro app includes the following functions: ► Math equation topics, more than 4000 of math equations included: * Areas, Planes * Analysis * Binomials * Bodies * Complex Numbers * Constants * Derive * Differential Equation * Fractions * Geometric Constructions * Geometry * Graphic Functions * Greek Alphabet * Integration * Logarithm * La Place * Power * Probability * Quadratic Equations * Roots * Series, Sequences * Trigonometry * Units * Statistical distributions * Distribution tables * and much more ► App functions: * Full featured equation and math topics search functionality (search for thousands of math topics) * New Scientific calculator (re-engineered) * Notes system for important equation notes * Bookmarking system for your favorite equations ! * Full app dual language support: English & German * Search for all topics and categories All math formulas and functions are included in the app no, need to download anything ! There is no need of carrying around heavy paper mathematics library books anymore - iformula is your right choice ! This app does not include any annoying advertisement !! That powerful validation, and our reputation for safety, durability, reliability, and ease of use, has also driven our consumer dedication further than ever anticipated. Moving forward, our commitment to "Perfection" remains steadfast: We will never compromise quality. We will continue to invest tremendous resources in the technology and talent necessary to improve our products wherever possible; and we will always strive to deliver maximum customer satisfaction! Exclusion of liability ! Exclusion of warranty and guarantee !

About

Terminal Drill

Features
Read full description

Build command-line confidence, one useful session at a time. Terminal Drill is an offline practice companion for terminal skills, developer workflows and Linux administration. Learn with short lessons, recall commands, troubleshoot simulated machines and take the same tasks to your own system. FOUR LEARNING TRACKS • Terminal Foundations — files, text, permissions and everyday shell skills. • Developer Workflows — Git, shell productivity and automation. • Linux Operations — services, networking, storage and containers. • RHCSA preparation — a RHEL 10 curriculum with 83 lessons, review assignments, 48 chapter labs and six capstones. PRACTISE, THEN APPLY Choose guided practice or independent recall. Use hints when you need them, then return for a later retrieval attempt. Practical labs check the represented machine state, including protected data and configuration that must survive a simulated reboot. Each lab declares its supported commands and limitations. Companion guides help you practise on a disposable real system. The 66 practical labs include twelve additional exercises across shell reasoning, Git recovery, files and text, service troubleshooting, networking and container operations. Labs are bounded teaching simulations, not a Linux runtime. They remain labelled as awaiting independent technical review; completion is not a certification or an exam-readiness guarantee. CLASSIC OR ADVENTURE Keep the familiar Classic experience, or switch to Adventure in Settings. Adventure adds missions, a character profile, twelve achievements, earned titles and cosmetics, flexible weekly goals and a collectible homelab. Progress, XP and purchases are shared between modes. Switch whenever you like. BUILT FOR USEFUL PRACTICE • Adaptive sessions and spaced review • Searchable command reference with examples and pitfalls • Mistake review and targeted practice • Saved lab checkpoints and session history • Manual backup and replacement restore for account-free device transfer • iPhone, iPad and Mac support ONE PURCHASE. EVERY TRACK. Start with free introductory content, Starter Ops and the RHCSA sampler. The existing one-time Full Access purchase unlocks every track and future content updates. Existing Full Access owners receive this expansion at no additional cost. No subscription. OFFLINE AND PRIVATE No account, advertising SDK or app analytics. Learning content is bundled and progress stays on your device. You control exports and sharing. Purchases and restoration use Apple's StoreKit. Terminal Drill is an independent learning product, not affiliated with or endorsed by Red Hat. Red Hat, RHEL and RHCSA are trademarks of Red Hat, Inc.

Screenshots

iformula pro4 screens
Terminal Drill4 screens

Verdict

The call

The clearest difference is price: Terminal Drill at Free against iformula pro's $2.99. On update cadence, ads, in-app purchases 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

Terminal Drill is free to download; iformula pro costs $2.99 up front. iformula pro sells 1 one-off in-app purchase and Terminal Drill sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

iformula pro ships an update every 4 months, Terminal Drill every 3 months. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

Scorecard1 real difference · 9 level
iformula pro versus Terminal Drill: the parameters behind the verdict, then further details
Parameteriformula proTerminal Drill
Price$2.99Free — better
Rating3.0 (2 ratings) — better—
Positive reviews45.5% of reviews—
Number of ratings2 — better—
Update frequencyEvery 4 monthsEvery 3 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.0 — better
Further details — not scored
Size88 MB11 MB
Age rating17+4+
DeveloperTobias WernerRichard Ziolkowski

In-app purchases

1 purchases

iformula pro

One-time1
  • draw function graph$0.99
1 purchases

Terminal Drill

One-time1
  • Terminal Drill - Full Access$3.99

Questions

Is iformula pro free?
iformula pro costs $2.99, and also offers in-app purchases.
Is Terminal Drill free?
Terminal Drill is free to download, with in-app purchases available.
Do iformula pro or Terminal Drill have ads?
Neither iformula pro nor Terminal Drill shows ads.
Which is updated more often, iformula pro or Terminal Drill?
iformula pro ships an update every 4 months, and Terminal Drill every 3 months. Most recently, iformula pro was updated on October 14, 2026 and Terminal Drill on October 7, 2026.

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