Flex Rewards vs Northern Waters Libraries
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flex Rewards
This app digitizes loyalty stamp cards, allowing users to collect stamps and earn rewards from participating businesses. It offers features like welcome and birthday rewards, promotions, and prize draws for a streamlined loyalty experience.
- Collect digital stamps
- Redeem rewards
- Receive welcome rewards
- Birthday rewards
- View promotions
- Set reminders
- Enter prize draws
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Flex Rewards is a digital stamp card app. Use this app to collect stamps and rewards from participating businesses. The app allows you to: • collect stamps • redeem rewards • receive welcome rewards • receive birthday rewards (see note 1) • receive promotions • set reminders • set preferences • enter prize-draws (see note 2) Note 1. To receive birthday rewards you must complete setup of your Giftbox and provide a date of birth. Note 2. Prize draw entries are available only from vendors that have configured custom stamp cards for your program. Please read our terms of service carefully. By registering an account with Flex Rewards you consent to the release of your contact information and other account data to the participating vendor for purposes of delivering the specified rewards program.
Northern Waters Libraries
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Take Northern Waters Libraries everywhere you go! Features: - Search the catalog - Manage your account - Place holds - Renew materials - Check branch opening hours, location and get directions
Screenshots
Verdict
The clearest difference is iOS requirement: Flex Rewards at 11.0 against Northern Waters Libraries's 15.6. On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Flex Rewards ships an update every 4 weeks, Northern Waters Libraries every 6 weeks. The most recent releases landed on November 2, 2026 and October 6, 2026 respectively.
| Parameter | Flex Rewards | Northern Waters Libraries |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (12 ratings) — better | — |
| Positive reviews | 91.7% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 4 weeks — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 47 MB | 49 MB |
| Age rating | 12+ | 4+ |
| Developer | Flextech.io Pte. Ltd. | Northern Waters Libraries |
In-app purchases
Flex Rewards
No in-app purchases
Northern Waters Libraries
No in-app purchases
Questions
Is Flex Rewards free?
Is Northern Waters Libraries free?
Do Flex Rewards or Northern Waters Libraries have ads?
Which is updated more often, Flex Rewards or Northern Waters Libraries?
Other comparisons
