比咚 vs No Trace
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
比咚
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比咚,为所有热爱生活的人打造的热闹聚集地!无论你是想认识结交新朋友,参加兴趣活动,还是随时记录分享高光瞬间,这里都能满足你。新友匹配、破冰突破自我,更多欢乐等你一起加入。 在比咚,每一次活动参与,都是快乐幸福的开端! 在比咚,你将获得: 1、通过偏好选择和活动参与,结识志同道合的人 2、发布动态,记录日常与精彩瞬间 3、通过更真实的资料与认证机制,获得更安心的互动体验,高质、真诚的相遇圈层。 4、一段认识自我、通往成熟关系的成长旅程。 Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
No Trace
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Encrypted code-based chat. No phone. No email. No account. Share an 8-character code with someone. They type it in. You are talking. End-to-end encrypted from your device. Nothing to log in to. Nothing to back up. WHY NO TRACE WORKS • No phone number — no SMS confirmation that fails in your country. You install, you chat. • No email — no recovery flow you have to remember. • No account — no profile, no friend list, no directory. • 8-character code — share on paper, by voice, by QR. Whoever has the code joins. Whoever does not, never sees the room. • Optional 2-layer code — share a room without leaking access. The join-code is the second gate. • Three privacy presets — Ghost saves nothing on your phone, Balanced keeps codes for one-tap re-open, Comfort keeps history too. Change anytime. • Screen-recording lock — your chats render as black in screen recorders. • App lock — optional tap-code on every launch. • 1-tap delete all data — Settings > Account > Delete. Nothing kept on our side. HOW IT IS DIFFERENT Signal needs a phone number. Telegram needs a phone number. WhatsApp needs a phone number. Threema gives you a permanent ID that lives forever. No Trace gives you a throwaway 8-character code per room — no identity follows you. WHO PICKS IT • Journalists collecting tips • Lawyers and doctors with confidentiality duties • Activists and advocates • Two people who want a chat that does not sit in either phone's backup • Teams who want a side channel separate from work tools CROSS-DEVICE iPhone, iPad, Web, macOS, Linux. Open the room on whatever you have nearest. PRIVACY YOU CAN VERIFY • No ads • Tracking limited to crash + basic analytics, disclosed in our privacy policy • Premium uses Apple Pay only — no external payment links • Delete all your data anytime: Settings > Account > Delete CONTENT SAFETY We have zero tolerance for objectionable content and abusive users. Every message can be reported with one tap (long-press > Report) and is reviewed within 24 hours. You can block any sender locally on long-press. Senders flagged for objectionable content are removed and ejected. Contact: hello@teamzlab.com. FEATURES • 1:1 and small-group code-gated rooms • Featured Topics — public rooms with daily prompts • Reply-to threading + emoji reactions • Edit and delete your own messages • Report and block any sender • Long-press copy • QR share for in-person joins • Three privacy levels you control PRICING 50 free messages on install. Premium is a one-time purchase — lifetime unlimited messages. No subscriptions. No recurring charges. No renewal. Install No Trace. Create a room. Share the code. That is the whole onboarding.
Screenshots
Verdict
比咚 and No Trace are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases 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. 比咚 sells 10 one-off in-app purchases and No Trace sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
比咚 ships an update every 2 weeks, No Trace every 11 days. The most recent releases landed on October 16, 2026 and October 31, 2026 respectively.
| Parameter | 比咚 | No Trace |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 11 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 143 MB | 100 MB |
| Age rating | 17+ | 17+ |
| Developer | 智学引擎(烟台) | Teamz Lab Ltd |
In-app purchases
比咚
- 100金币礼包$1.99
- 查看谁喜欢我特权周度解锁$3.99
- 查看谁喜欢我特权月度解锁$5.99
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- 查看谁喜欢我特权季度解锁$17.99
- 1050进阶金币礼包$17.99
- 2050豪华金币礼包$29.99
- 查看谁喜欢我特权年度解锁$39.99
- 520超值金币礼包$69.99
- 5000尊享金币礼包$69.99
- 11500至尊金币礼包$149.99
No Trace
- Lifetime Access$4.99









