TRIGOMETRIC vs Planet Banknote
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TRIGOMETRIC
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Trigometric Sdn. Bhd., located in Kuala Lumpur, was established in 1995. The house conducts 2 large public sale a year with focus on Malaysian Banknotes & Coins, in addition with various world banknotes & coins. Our auctions feature rare selections of Malaysian Banknotes and also China and Hong kong specialty banknotes.
Planet Banknote
Discover and collect world banknotes from a family-owned shop. Browse by country and collection, including unique hyperinflation notes. Every purchase comes with a Certificate of Authenticity and free U.S. shipping.
- Collect world banknotes
- Shop by country and collection
- Signature hyperinflation notes
- Certificate of Authenticity
- Free U.S. shipping
- Private vault for owned notes
- First-to-Know notifications
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Planet Banknote is the iOS storefront for our family-owned Sarasota shop. We source world banknotes directly from mints, central banks, and trusted consignors — history you can hold. Shop by country and collection. Hyperinflation notes from Zimbabwe and Venezuela are among our signature pieces, presented as historical collectibles. Every order includes a Certificate of Authenticity. U.S. orders ship free via USPS Priority. Returns are accepted within 7 days of receipt. Sign in with your Planet Banknote account to view orders and invoices. Keep a private vault of notes you own or want on this device. Optional First-to-Know notifications can alert you when a wanted piece is back in the shop. Pay in the app. Apple Pay is available on the hosted checkout sheet. Questions? Email admin@planetbanknote.com or call (888) 996-COIN (2646).
Screenshots
Verdict
TRIGOMETRIC and Planet Banknote are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | TRIGOMETRIC | Planet Banknote |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 25 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 135 MB | 3 MB |
| Age rating | 9+ | 4+ |
| Developer | TRIGOMETRIC SDN BHD | Certified Rare Coin Auctions LLC |
In-app purchases
TRIGOMETRIC
No in-app purchases
Planet Banknote
No in-app purchases
Questions
Is TRIGOMETRIC free?
Is Planet Banknote free?
Do TRIGOMETRIC or Planet Banknote have ads?
Other comparisons
