Comparison

Cheapest Store x Shopping List vs Task Rainbow

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

Head to head
About

Cheapest Store x Shopping List

This app helps you track the cheapest store for each item you buy, allowing you to add photos for clarity. It's designed for meticulous shoppers who want to optimize their spending and manage inventory efficiently.

Highlights
  • Record cheapest store per product
  • Add photos to product entries
  • One-handed product addition
  • Track lowest prices
  • Inventory management
Features
Read full description

[Features] ■Specializes in recording the cheapest store for each product. ■Allows adding photos to make vague memories clear. ■Easily add products with one hand. Perfect for: •You're a perfectionist who wants to note the cheapest store, not just the lowest price. •You're a stoic who always wants to update the lowest price. •You're a stock manager for all the materials. •You have an eye for cheap products. •You want to fully utilize your abacus skills in shopping comparisons. •You're going to check which electronics store has the cheapest laptop. •You're an undercover supermarket investigator. •You want to reduce the burden of shopping addiction, even a little. •You're tired of remembering prices in an area full of home improvement stores. •So... let's try it out!

About

Task Rainbow

Features
Read full description

Tasks take longer than you expect, and the rest of your day slips. You stay busy, but it is hard to tell where the time went. Get a clearer sense of how long your work takes, so you can plan a day that fits your pace. Task Rainbow helps you compare your estimates with the time you actually spend and use today's experience to plan what comes next. Track time as you work, see it against your estimate in rainbow rings and bars, and review your records when you are done. MAKE ROOM FOR TODAY'S TASKS Organize the tasks you want to work on today and save other tasks for later. Add time estimates to give each task a starting point. KEEP YOUR ESTIMATE IN SIGHT Rainbow rings and bars show elapsed time relative to your estimate. See an estimate of the time remaining while you are within your planned duration. When there is no estimate, or you go over it, the display shows elapsed time. You can keep tracking beyond your estimate. USE TODAY'S RECORDS TO PLAN WHAT COMES NEXT Start, stop, and resume as you work, then mark the task complete. Review your recorded work sessions to see how you used your time and inform your next estimate. MAKE EVERYDAY PLANNING EASIER Group routines into sets and reuse them in your daily plans. Keep familiar steps ready for regular preparation and recurring work. START WITH THE FREE FEATURES Basic planning, time tracking, and records are free. Save up to 5 routine sets, with up to 10 routines in each set. TASK RAINBOW PREMIUM Remove the limits on routine sets and routines per set. Save and share a PDF of your tasks and time records for a selected day. Premium is available as a monthly or annual auto-renewable subscription. Your subscription renews automatically unless canceled. See the in-app purchase screen for pricing and purchase terms. Privacy Policy: https://sites.google.com/view/studio-rainbow-terms/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Cheapest Store x Shopping List4 screens
Task Rainbow4 screens

Verdict

The call

The clearest difference is in-app purchases: Cheapest Store x Shopping List at none against Task Rainbow's 2. Cheapest Store x Shopping List also leads on iOS requirement (12.0 vs 18.5). Task Rainbow's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 2 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. Task Rainbow sells 2 in-app purchases, starting at $2.99 per month. Cheapest Store x Shopping List asks for nothing beyond the download.

UpkeepUpdate frequency

Cheapest Store x Shopping List ships an update every 2 months, Task Rainbow every 2 weeks. The most recent releases landed on October 30, 2026 and November 6, 2026 respectively.

Scorecard4 real differences · 5 level
Cheapest Store x Shopping List versus Task Rainbow: the parameters behind the verdict, then further details
ParameterCheapest Store x Shopping ListTask Rainbow
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better18.5
Further details — not scored
Size38 MB85 MB
Age rating4+4+
DeveloperKoji WatanabeToshiaki Nakamura

In-app purchases

None

Cheapest Store x Shopping List

No in-app purchases

2 purchases

Task Rainbow

Subscriptions2
  • Premium 1 month$2.991 Month
  • Premium 1 year$19.991 Year

Questions

Is Cheapest Store x Shopping List free?
Cheapest Store x Shopping List is free to download, with no in-app purchases.
Is Task Rainbow free?
Task Rainbow is free to download, with in-app purchases available.
Do Cheapest Store x Shopping List or Task Rainbow have ads?
Cheapest Store x Shopping List shows ads; Task Rainbow does not.
Which is updated more often, Cheapest Store x Shopping List or Task Rainbow?
Cheapest Store x Shopping List ships an update every 2 months, and Task Rainbow every 2 weeks. Most recently, Cheapest Store x Shopping List was updated on October 30, 2026 and Task Rainbow on November 6, 2026.

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