Comparison

PrettyMerch vs Tamarin.app

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

Head to head
About

PrettyMerch

This app provides Amazon Merch on Demand sellers with real-time sales data, product performance insights, and instant notifications. It offers a user-friendly mobile dashboard to track royalties, BSR, and reviews, helping sellers grow their print-on-demand business.

Highlights
  • Real-time sales data
  • Detailed product list
  • Historical sales insights
  • Product Quick View (BSR, Reviews)
  • Instant sales notifications
  • Customizable currency
  • Dark/Light mode
Features
Read full description

PrettyMerch is the #1 Merch app designed for Amazon Merch on Demand (formerly known as Merch by Amazon) sellers. Whether you're on Tier 10 or a full time Print on Demand expert, PrettyMerch helps you stay on top of your sales, products, and performance — anytime, anywhere. With over 50,000 users and a 4.9+ star rating, PrettyMerch is trusted by the community to provide a fast, beautiful, and easy-to-use Merch dashboard experience on mobile. >> Key Features: - Secure login — save your username & password for seamless access - Real-time sales data — see Today’s Sales, Returns, and Royalties across ALL marketplaces - Detailed product list — view every product sold each day in the order that they sold - Historical insights — track Yesterday, Last 7 Days, This Month, and Previous Month stats - Product Quick View — check BSR, Reviews, and Offer Price without leaving the app - Instant Notifications — get alerts for New Sales, Cancellations, and Returns - Customize your default currency — view royalties converted to the currency of your choice - Dark mode & Light mode - Fast loading and battery-efficient — optimized for daily use Use it together with the PrettyMerch Chrome Extension to get extended research features on desktop as well. PrettyMerch is the must-have Merch app to grow your Amazon Print on Demand business and keep you motivated with live updates on you sales!

About

Tamarin.app

Features
Read full description

Indispensable for all sellers on Amazon Marketplaces. All important information is available at a glance. Amazon fees, cost of goods sold, advertising... Get a complete and accurate profit estimate. Make the most of your data. We'll teach you a thing or two about your customers ;)

Screenshots

PrettyMerch4 screens
Tamarin.app4 screens

Verdict

The call

The clearest difference is in-app purchases: PrettyMerch at none against Tamarin.app's 1. Tamarin.app's advantage is iOS requirement (14.2 vs 16.4). On price, update cadence, ads 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. Tamarin.app sells 1 one-off in-app purchase. PrettyMerch asks for nothing beyond the download.

UpkeepUpdate frequency

PrettyMerch ships an update every 2 months, Tamarin.app monthly. The most recent releases landed on October 21, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 8 level
PrettyMerch versus Tamarin.app: the parameters behind the verdict, then further details
ParameterPrettyMerchTamarin.app
PriceFreeFree
Rating4.0 (4 ratings) — better—
Positive reviews27.3% of reviews—
Number of ratings4 — better—
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.414.2 — better
Further details — not scored
Size59 MB75 MB
Age rating4+4+
DeveloperMerchCoders LtdSudelli

Bugs and requests

PrettyMerch

Reported bugs

11 issues
  • Login screen freezes indefinitely
  • App crashes when switching date tabs
  • Blank dashboard after authentication
  • Notifications not sending despite being enabled
  • Incorrect sales count display
Show 6 more
  • App crashes on startup
  • Password change breaks login functionality
  • Stuck on loading wheel
  • Date not updating correctly
  • Returns not displayed in sales data
  • Cookie requirement prevents login

Requested features

10 requests
  • Push notifications for sales alerts
  • Sound notification (cha-ching) for sales
  • Dark mode option
  • Auto-login functionality
  • Weekly sales view
Show 5 more
  • Multi-marketplace support (UK, DE)
  • Sales history/data retention
  • Faster login process
  • Better product thumbnail updates
  • Timeout mechanism for frozen logins

Tamarin.app

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

PrettyMerch

No in-app purchases

1 purchases

Tamarin.app

One-time1
  • 1 month subscription$17.99

Questions

Is PrettyMerch free?
PrettyMerch is free to download, with no in-app purchases.
Is Tamarin.app free?
Tamarin.app is free to download, with in-app purchases available.
Do PrettyMerch or Tamarin.app have ads?
Neither PrettyMerch nor Tamarin.app shows ads.
Which is updated more often, PrettyMerch or Tamarin.app?
PrettyMerch ships an update every 2 months, and Tamarin.app monthly. Most recently, PrettyMerch was updated on October 21, 2026 and Tamarin.app on October 7, 2026.

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