Current rank
#3Brazil · Paid · Business
- Was
- —7 days ago
- Change
- Not enough history yetover 7 days
- Best
- #3in 7 days
- Longest chart run
- 1 dayBrazil · Paid · Business
- New ratings, 7 days
- —Needs a week of rating history
Ranking events
- Entered the Paid · Business chart at #3Brazil
About
O ductulator que anda na sua van são dois discos de papelão e um rebite. Este é aquele instrumento, no telefone, com a conta feita direito. Gire o aro de fora até a vazão que você tem. Gire a roda azul até a taxa de atrito do seu projeto. A resposta aparece no meio, sob o fio de leitura: diâmetro redondo, velocidade do ar e a próxima bitola comercial. Para cima, nunca para baixo, porque duto um número maior custa um pouco de chapa e duto um número menor custa o serviço. A velocidade não é…
Ranks come from Apple's public App Store charts, checked once a day. Appulse Index isn't affiliated with Apple.
Rank history
Higher on the chart is better: #1 is at the top.
Sign in to see 30 days, 90 days and all history.
Brazil · Paid · Business: best #3, latest #3, over 9 snapshots since 19 Oct.
In 1 chart now
| Chart | Rank | 24 h | 7 days | Best | Days on chart |
|---|---|---|---|---|---|
| Brazil· Paid · Business · best #3 · 1 day | #3 | New entry | Not enough history yet | #3 | 1 |
Competitors
Full chartTop of Paid · Business in Brazil. DuctRule: HVAC Duct Sizing is #3 there. Changes are over 7 days.
- #1 (number one)Up 1 place
Jump Desktop (RDP, VNC, Fluid)Phase Five Systems - #2Up 45 places
CameraVisionMasayuki Akamatsu - #4Down 1 place
SketchCut PROVladimir Rudenko - #5Down 4 places
Bíblia King James 1611Claudio Ferreira Rodrigues - #6Up 10 places
TurboScan™ Pro: PDF scannerPiksoft Inc. - #7Up 2 places
VOMobileVarejonline - #8Not enough history yet
MDScan + OCRMikhail Kuznetsov - #9Up 8 places
SA ContactsShenZhen SamApp Technology Development Co., Ltd - #10Up 8 places
TapeACall Pro: Call RecorderMosaic S.r.l. - #11Not enough history yet
vMEyeCloudGuangzhou Kedi Intelligence Technology Co., Ltd. - #12No change
JotNot Scanner App ProMobiTech 3000 LLC - #13Up 6 places
ABBYY Business Card Reader ProABBYY USA Software House Inc - #14Up 6 places
Logo Creator゜Logo Maker LLC - #15Up 6 places
ScanBizCardsScanBiz Mobile Solutions L.P. - #16Up 6 places
- #17Up 6 places
Audio MemosImesart S.a.r.l. - #18Up 6 places
DocumentsSavy Soda Pty Ltd - #19Up 6 places
Alon Dictaphone-Voice RecorderALON Software - #20Up 6 places
Mail+ for OutlookMAIL PLUS APP LLC - #21Up 6 places
Genius Scan Enterprise - PDFThe Grizzly Labs
Screenshots
About
From the app's App Store listing.
O ductulator que anda na sua van são dois discos de papelão e um rebite. Este é aquele instrumento, no telefone, com a conta feita direito.
Gire o aro de fora até a vazão que você tem. Gire a roda azul até a taxa de atrito do seu projeto. A resposta aparece no meio, sob o fio de leitura: diâmetro redondo, velocidade do ar e a próxima bitola comercial. Para cima, nunca para baixo, porque duto um número maior custa um pouco de chapa e duto um número menor custa o serviço.
A velocidade não é…
Store listing
How the app presents itself on the App Store. Select a screenshot to open it full size.
App facts
What Apple publishes about this app. Ratings are from one country's App Store.
- Price
- R$29.90
- Released
- 25 Sep 2026
- Last update
- Version 1.1
- Requires
- iOS 26.1or later
- Size
- 2.4 MB
- Languages
- 3
Rank history
Higher on the chart is better: #1 is at the top.
Sign in to see 30 days, 90 days and all history.
Brazil · Paid · Business: best #3, latest #3, over 9 snapshots since 19 Oct.
Current rankings
Every chart this app is in right now, best position first.
| Chart | Rank | 24 h | 7 days | Best | Days on chart |
|---|---|---|---|---|---|
| Brazil· Paid · Business · best #3 · 1 day | #3 | New entry | Not enough history yet | #3 | 1 |
Ranking events
Entries, big moves, #1s and new versions we've recorded, by day.
- Entered the Paid · Business chart at #3Brazil
Competitors
Full chartTop of Paid · Business in Brazil. DuctRule: HVAC Duct Sizing is #3 there. Changes are over 7 days.
- #1 (number one)Up 1 placeJump Desktop (RDP, VNC, Fluid)Phase Five Systems
- #2Up 45 placesCameraVisionMasayuki Akamatsu
- #3New entryDuctRule: HVAC Duct SizingThis app
- #4Down 1 placeSketchCut PROVladimir Rudenko
- #5Down 4 placesBíblia King James 1611Claudio Ferreira Rodrigues
- #6Up 10 placesTurboScan™ Pro: PDF scannerPiksoft Inc.
- #7Up 2 placesVOMobileVarejonline
- #8Not enough history yetMDScan + OCRMikhail Kuznetsov
- #9Up 8 placesSA ContactsShenZhen SamApp Technology Development Co., Ltd
- #10Up 8 placesTapeACall Pro: Call RecorderMosaic S.r.l.
- #11Not enough history yetvMEyeCloudGuangzhou Kedi Intelligence Technology Co., Ltd.
- #12No changeJotNot Scanner App ProMobiTech 3000 LLC
- #13Up 6 placesABBYY Business Card Reader ProABBYY USA Software House Inc
- #14Up 6 placesLogo Creator゜Logo Maker LLC
- #15Up 6 placesScanBizCardsScanBiz Mobile Solutions L.P.
- #16Up 6 places
- #17Up 6 placesAudio MemosImesart S.a.r.l.
- #18Up 6 placesDocumentsSavy Soda Pty Ltd
- #19Up 6 placesAlon Dictaphone-Voice RecorderALON Software
- #20Up 6 placesMail+ for OutlookMAIL PLUS APP LLC
- #21Up 6 placesGenius Scan Enterprise - PDFThe Grizzly Labs
Ranks come from Apple's public App Store charts, checked once a day. Appulse Index isn't affiliated with Apple.