Comparison

Wastewater Operator Prep vs Fruit Timer

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

Head to head
About

Wastewater Operator Prep

Prepare for your wastewater operator certification exam with extensive practice questions and detailed explanations. This app covers all treatment processes and offers personalized study plans, timed modes, and progress tracking to boost your confidence and understanding.

Highlights
  • 1,027 practice questions
  • Detailed explanations for each answer
  • Full treatment process coverage
  • Personalized daily study plans
  • Timed practice modes
  • Progress tracking and pass probability
Features
Read full description

Walk into your wastewater operator certification exam ready. Wastewater Operator Prep gives you 1,027 practice questions with a clear explanation for every single answer, so you don't just memorize the right choice - you understand the treatment science behind it. Built for candidates preparing for ABC/state wastewater treatment operator certification exams. WHY IT WORKS Passing isn't about cramming. It's about repeated, targeted practice across every area the exam tests - then reinforcing exactly what you got wrong until it sticks. - 1,027 questions written to match the real exams' style and difficulty - An explanation on every answer, so each question teaches you something - Full treatment-process coverage: Preliminary & Primary Treatment - Activated Sludge - Secondary Clarification - Disinfection - Nutrient Removal - Solids Handling & Biosolids - Laboratory & Sampling - Collection Systems - Math & Dosage Calculations - Safety & Regulations STUDY YOUR WAY - Daily Plan that sizes itself to your exam date and keeps you on pace - Quick 10 for a fast review between shifts - Timed Mode to build exam-day speed and stamina - Smart Review using spaced repetition to resurface weak spots - Full-Length Mock Exam that simulates the real thing - Missed Questions queue so nothing slips through - Custom Quiz to drill any topic on demand TRACK YOUR PROGRESS - Pass probability that updates as you practice - Accuracy broken down by topic - Streaks to keep you consistent - Exam countdown WHO IT'S FOR Wastewater treatment operators preparing for ABC or state certification exams at any grade level. START TODAY Your exam date isn't moving. Start a free trial, take your first Quick 10 today, and watch your pass probability climb. --- SUBSCRIPTION DETAILS Full access is available through an auto-renewing subscription: - Weekly: $5.99 - Monthly: $14.99 A free trial is available for new subscribers. Payment will be charged to your Apple ID account at confirmation of purchase. Your subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription. Terms of Use: https://hermesdigitalbr-spec.github.io/wastewater-legal/terms.html Privacy Policy: https://hermesdigitalbr-spec.github.io/wastewater-legal/privacy.html Terms of Use (EULA): https://www.apple.com/legal/itunes/appstore/dev/stdeula/

About

Fruit Timer

Features
Read full description

Fruit Timer is a visual countdown timer that gradually reveals an image clockwise as time passes. Follow the picture and large countdown to see how much time remains. Choose watermelon, orange, or kiwi, use a favorite photo, or try the included Pomeranian, Dalmatian, and Shiba Inu portraits. Use it for studying, focused work, getting ready, tidying up, and taking breaks. Tap the large time display, choose a duration, and tap Start. Switch images while the timer is running, or pause, resume, and reset whenever you need to. Make the timer your own • Touch and hold an image button to choose a dog portrait or a photo • Zoom and adjust the position to fit the circular display • Use Settings to apply one image to one, several, or all three slots • Adjust a saved image again or restore the original fruit for each slot Everyday features • Set a duration from 1 second to 59 minutes 59 seconds • Large remaining-time digits and a circular image that shows elapsed time • Pause, resume, reset, and repeat the same duration • Separate sound and vibration settings • A local completion notification when notifications are allowed • Live Activities with remaining time on the Lock Screen and in the Dynamic Island on supported iPhones • An option to keep the screen awake during a timer • Portrait display on iPhone; adaptable portrait, landscape, and window layouts on iPad • An optional hiragana and katakana display mode when using Japanese • 21 language and regional localizations No account is required, and there are no ads. The timer, included dog portraits, and editing of imported images work offline. Selected photos are stored in the app and are not uploaded to a developer-operated server. Your original photos are not modified. No in-app purchase is needed to use the timer or image features. Settings includes an optional “Buy the developer a coffee” purchase. This consumable support purchase can be made more than once, provides no extra features or benefits, and is not a subscription. Notifications and Live Activities depend on your device and system settings. Loading a photo from iCloud, making a support purchase, or opening store and support pages may require an internet connection.

Screenshots

Wastewater Operator Prep4 screens
Fruit Timer2 screens

Verdict

The call

The clearest difference is update cadence: Wastewater Operator Prep at every 3 weeks against Fruit Timer's every 6 weeks. On price, 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

Both are free to download. Wastewater Operator Prep sells 2 in-app purchases, starting at $5.99 per 7 days and Fruit Timer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Wastewater Operator Prep ships an update every 3 weeks, Fruit Timer every 6 weeks. The most recent releases landed on September 26, 2026 and October 4, 2026 respectively.

Scorecard1 real difference · 8 level
Wastewater Operator Prep versus Fruit Timer: the parameters behind the verdict, then further details
ParameterWastewater Operator PrepFruit Timer
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size3 MB16 MB
Age rating4+4+
DeveloperHermes Inteligencia Digital LtdaAKIHIRO OHNO

In-app purchases

2 purchases

Wastewater Operator Prep

Subscriptions2
  • Wastewater Prep Weekly$5.997 Days
  • Wastewater Prep Monthly3 Days trial$14.991 Month
1 purchases

Fruit Timer

One-time1
  • Support the developer$0.49

Questions

Is Wastewater Operator Prep free?
Wastewater Operator Prep is free to download, with in-app purchases available.
Is Fruit Timer free?
Fruit Timer is free to download, with in-app purchases available.
Do Wastewater Operator Prep or Fruit Timer have ads?
Neither Wastewater Operator Prep nor Fruit Timer shows ads.
Which is updated more often, Wastewater Operator Prep or Fruit Timer?
Wastewater Operator Prep ships an update every 3 weeks, and Fruit Timer every 6 weeks. Most recently, Wastewater Operator Prep was updated on September 26, 2026 and Fruit Timer on October 4, 2026.

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