ChatNPU vs ReplyLens
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ChatNPU
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ChatNPU Keyboard rewrites your text instantly in the style you choose. Select an identity, tap once, and you are offered a new version powered by on-device AI. Built for privacy, your typed and rewritten text stays on device. ChatNPU is available on supported devices with the required on-device AI capabilities.
ReplyLens
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ReplyLens helps you write clear, polished replies faster. Paste the message you want to respond to, choose a tone, and generate a reply you can review, edit, and copy. ReplyLens is useful for casual chats, work messages, emails, marketplace conversations, and everyday communication. Key features: • Generate AI-powered reply suggestions • Adjust tone for different situations • Review and edit before using • Copy responses quickly • Simple, focused interface ReplyLens does not send messages on your behalf. You stay in control of what you copy, edit, and send.
Screenshots
Verdict
ChatNPU and ReplyLens 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 | ChatNPU | ReplyLens |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 8 days | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | RBN SPC LTD | Ziyi Wang |
In-app purchases
ChatNPU
No in-app purchases
ReplyLens
No in-app purchases
