Sendblue vs TAGBASE Writer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sendblue
Connect your CRM to your phone for seamless peer-to-peer messaging. Manage customer communications on the go with this business tool.
- CRM P2P Messaging Access
- Mobile Communication
- Business Tool
- Customer Communications
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Access CRM P2P Messaging From Your Phone!
TAGBASE Writer
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Prove what's valuable is real, in one tap. TAGBASE Writer turns blank NFC tags into verifiable proof. Define what you want to protect in the TAGBASE web portal, open the app, select it, and hold your phone to the tag. Every tag is configured with the same security standards used in mass production. What you can protect: • Jewellery: proof of authenticity in every piece • Documents: certificates and records that are impossible to forge • Maintenance: proof that the work actually happened • Products: the authenticity you already trust These are a few of the possibilities. Because TAGBASE is a platform, you can build the same verifiable proof into your own products and workflows. How it works: 1. Create your item in the TAGBASE web portal 2. Open Writer and select it 3. Hold your phone to the tag, done Verify anywhere: Tap any TAGBASE tag with your phone to confirm it is genuine, on the spot, with no extra hardware and nothing to install for the person checking. Built for smaller-scale and custom setups, where configuring tags yourself gives you maximum flexibility. Write one tag or work through a batch, at your own pace. In this version we rebuilt the app end to end, so writing and verifying tags is faster and steadier. Requires an iPhone with NFC and a TAGBASE account.
Screenshots
Verdict
The clearest difference is update cadence: Sendblue at weekly against TAGBASE Writer's every 3 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Sendblue ships an update weekly, TAGBASE Writer every 3 weeks. The most recent releases landed on November 8, 2026 and November 9, 2026 respectively.
| Parameter | Sendblue | TAGBASE Writer |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (19 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 19 — better | — |
| Update frequency | Weekly — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.4 | 16.4 |
| Further details — not scored | ||
| Size | 105 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Sendblue | TAGBASE GmbH |
In-app purchases
Sendblue
No in-app purchases
TAGBASE Writer
No in-app purchases








